{"title":"GC Tek","description":"\u003cp\u003eThe full GC Tek (Grand Champion Technologies) line: AlphaONE, AquaBead and AlphaNANO pressure filters, pre-plumbed WattMizer systems, Zapp Pure and ZapPRO UV, AquaSieve prefilters, ThermaKoi heaters, WunderMax pumps, media and genuine parts. Mystic Koi is an authorized GC Tek dealer.\u003c\/p\u003e","products":[{"product_id":"gc-tek-pressure-filters","title":"GC Tek AlphaONE \/ AquaBead \/ AlphaNANO Pressure Filter","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct 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.note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek pressure bead filter · 5 sizes · 3 media · standard or LH valve\u003c\/p\u003e\n\u003ch2\u003eThe filter 48 out of 50 GC Tek customers choose\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eOne tank family, your choice of media. The AlphaONE, AquaBead and AlphaNANO share the same double-layer fiberglass vessel, Omnifuser internals, 2 HP media agitator, ALISS life-support valve and 10\" clear lid — the only difference is what's inside. Pick a size by pond volume and fish load, then pick the media that suits how you keep koi.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eOmnifuser internals\u003c\/h3\u003e\n\u003cp\u003eNo slotted laterals, no elbows. Water enters at the lowest point and exits at the highest, so the entire media bed works and solids collect at the bottom center where backwash purges them.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e2 HP media agitator\u003c\/h3\u003e\n\u003cp\u003eA regenerative blower (100+ CFM) tumbles the bed during backwash so beads never pack or channel — a 3-minute weekly chore instead of a wrestling match.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eALISS life support\u003c\/h3\u003e\n\u003cp\u003ePump failure or medical bypass? Plug your air pump into the ALISS valve and the bacteria stay oxygenated until flow is restored.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eLifetime tank warranty\u003c\/h3\u003e\n\u003cp\u003eMolded fiberglass with a second spun-fiberglass shell, pressure rated to 58 psi. Limited lifetime warranty on the tank, 1-year satisfaction guarantee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eWhich media?\u003c\/h3\u003e\n\u003cdiv class=\"two\"\u003e\n\u003cdiv class=\"box\"\u003e\n\u003ch3\u003eAlphaONE — AlphaBioONE media\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOpen-cell, dimpled, air-injected media distributes debris through the \u003cb\u003ewhole bed\u003c\/b\u003e, not the top few inches.\u003c\/li\u003e\n\u003cli\u003eLeast flow restriction of the three; doesn't slow down between backwashes the way classic beads do.\u003c\/li\u003e\n\u003cli\u003eThe one most koi keepers (and GC Tek) pick — roughly 48 of every 50 filters shipped.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"box\"\u003e\n\u003ch3\u003eAquaBead — BioGems media  |  AlphaNANO media\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eAquaBead:\u003c\/b\u003e the original small floating bead. Tighter mechanical capture for keepers who want the finest polish from a bead bed and don't mind a slightly higher operating pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAlphaNANO:\u003c\/b\u003e BioGems-sized pieces molded like AlphaONE's open-cell media — 600+ sq ft of surface per cu ft, field-tested by contractors for over a year. Polishing-filter clarity with AlphaONE-style flow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eSize by pond \u0026amp; fish load\u003c\/h3\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003eFish load\u003c\/th\u003e\n\u003cth\u003eMax flow\u003c\/th\u003e\n\u003cth\u003eTank (dia × H)\u003c\/th\u003e\n\u003cth\u003eLid\u003c\/th\u003e\n\u003cth\u003eStandard\u003c\/th\u003e\n\u003cth\u003eLH\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.75 cu ft\u003c\/td\u003e\n\u003ctd\u003e2,500 gal\u003c\/td\u003e\n\u003ctd\u003e90 lb\u003c\/td\u003e\n\u003ctd\u003e50 gpm\u003c\/td\u003e\n\u003ctd\u003e19\" x 31\"\u003c\/td\u003e\n\u003ctd\u003e8\"\u003c\/td\u003e\n\u003ctd\u003e$2,239.95\u003c\/td\u003e\n\u003ctd\u003e$2,379.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.5 cu ft\u003c\/td\u003e\n\u003ctd\u003e5,000 gal\u003c\/td\u003e\n\u003ctd\u003e125 lb\u003c\/td\u003e\n\u003ctd\u003e70 gpm\u003c\/td\u003e\n\u003ctd\u003e21\" x 34.5\"\u003c\/td\u003e\n\u003ctd\u003e10\"\u003c\/td\u003e\n\u003ctd\u003e$2,524.95\u003c\/td\u003e\n\u003ctd\u003e$2,669.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4.25 cu ft\u003c\/td\u003e\n\u003ctd\u003e10,000 gal\u003c\/td\u003e\n\u003ctd\u003e225 lb\u003c\/td\u003e\n\u003ctd\u003e90 gpm\u003c\/td\u003e\n\u003ctd\u003e24.5\" x 35.5\"\u003c\/td\u003e\n\u003ctd\u003e10\"\u003c\/td\u003e\n\u003ctd\u003e$2,824.95\u003c\/td\u003e\n\u003ctd\u003e$2,974.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6.0 cu ft\u003c\/td\u003e\n\u003ctd\u003e17,000 gal\u003c\/td\u003e\n\u003ctd\u003e300 lb\u003c\/td\u003e\n\u003ctd\u003e120 gpm\u003c\/td\u003e\n\u003ctd\u003e30.4\" x 40\"\u003c\/td\u003e\n\u003ctd\u003e10\"\u003c\/td\u003e\n\u003ctd\u003e$3,329.95\u003c\/td\u003e\n\u003ctd\u003e$3,559.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10.0 cu ft\u003c\/td\u003e\n\u003ctd\u003e25,000 gal\u003c\/td\u003e\n\u003ctd\u003e500 lb\u003c\/td\u003e\n\u003ctd\u003e180 gpm\u003c\/td\u003e\n\u003ctd\u003e36.4\" x 45\"\u003c\/td\u003e\n\u003ctd\u003e10\"\u003c\/td\u003e\n\u003ctd\u003e$4,279.95\u003c\/td\u003e\n\u003ctd\u003e$4,437.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003eGC Tek's sizing rule:\u003c\/b\u003e 1 cu ft of media supports about 50 lb of koi fed 1% of body weight per day. Serious koi ponds run heavier than a water garden — when you're between sizes, go up. All ports are 2\" unions; the 1.75 has an 8\" lid, everything larger gets the 10\" lid.\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eStandard vs. LH (Lower Head)\u003c\/h3\u003e\n\u003cp\u003eMost of the restriction in any pressurized system is the multiport valve. On the \u003cb\u003eLH\u003c\/b\u003e version the water bypasses the multiport entirely in normal filtration and only passes through it during backwash, and the internals are reworked for even more flow. Same tank, same media, same ratings — you just get to run a smaller, lower-amp pump for the same turnover. Built for keepers who care about the electric bill.\u003c\/p\u003e\n\u003ch3 class=\"sec\"\u003eEvery unit ships with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6-position multiport valve (Filter · Backwash · Rinse · Waste · Recirculate · Closed) with 2\" union openings and a large cleanable sight glass\u003c\/li\u003e\n\u003cli\u003e2 HP media agitator with heavy-duty rebuildable spring check valve\u003c\/li\u003e\n\u003cli\u003eALISS air-injection valve · true-reading pressure gauge · EZ Drain that lets water out, not beads\u003c\/li\u003e\n\u003cli\u003eClear lid · media pre-loaded · back in GC Tek's most popular color: black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/biogems-aquabead-filter-bead-media-1-cu-ft\"\u003eReplacement media\u003c\/a\u003e\u003ca href=\"\/products\/multiport-valve-with-spring-check-valve\"\u003eMultiport valve \u0026amp; repair kit\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-spider-gasket\"\u003eSpider gasket\u003c\/a\u003e\u003ca href=\"\/products\/alphaone-clear-lid\"\u003eClear lids\u003c\/a\u003e\u003ca href=\"\/products\/blower-spring-check-valve\"\u003eSpring check valves\u003c\/a\u003e\u003ca href=\"\/collections\/gc-tek-systems\"\u003ePre-plumbed WattMizer systems\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"AlphaONE \/ 1.75 cu ft \/ LH (Lower Head)","offer_id":47994739294357,"sku":"AO1.75LH","price":2379.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 2.5 cu ft \/ LH (Lower Head)","offer_id":47994739327125,"sku":"AO2.5LH","price":2669.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 4.25 cu ft \/ LH (Lower Head)","offer_id":47994739359893,"sku":"AO4.25LH","price":2974.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 6.0 cu ft \/ LH (Lower Head)","offer_id":47994739392661,"sku":"AO6.0LH","price":3559.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 10.0 cu ft \/ LH (Lower Head)","offer_id":47994739425429,"sku":"AO10.0LH","price":4437.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 1.75 cu ft \/ Standard","offer_id":47994739458197,"sku":"AB1.75","price":2239.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 1.75 cu ft \/ LH (Lower Head)","offer_id":47994739490965,"sku":"AB1.75LH","price":2379.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 2.5 cu ft \/ Standard","offer_id":47994739523733,"sku":"AB2.5","price":2524.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 2.5 cu ft \/ LH (Lower Head)","offer_id":47994739556501,"sku":"AB2.5LH","price":2669.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 4.25 cu ft \/ Standard","offer_id":47994739589269,"sku":"AB4.25","price":2824.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 4.25 cu ft \/ LH (Lower Head)","offer_id":47994739622037,"sku":"AB4.25LH","price":2974.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 6.0 cu ft \/ Standard","offer_id":47994739654805,"sku":"AB6.0","price":3329.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 6.0 cu ft \/ LH (Lower Head)","offer_id":47994739687573,"sku":"AB6.0LH","price":3559.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 10.0 cu ft \/ Standard","offer_id":47994739720341,"sku":"AB10.0","price":4279.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 10.0 cu ft \/ LH (Lower Head)","offer_id":47994739753109,"sku":"AB10.0LH","price":4437.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 1.75 cu ft \/ Standard","offer_id":47994739785877,"sku":"AN1.75","price":2239.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 1.75 cu ft \/ LH (Lower Head)","offer_id":47994739818645,"sku":"AN1.75LH","price":2379.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 2.5 cu ft \/ Standard","offer_id":47994739851413,"sku":"AN2.5","price":2524.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 2.5 cu ft \/ LH (Lower Head)","offer_id":47994739884181,"sku":"AN2.5LH","price":2669.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 4.25 cu ft \/ Standard","offer_id":47994739916949,"sku":"AN4.25","price":2824.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 4.25 cu ft \/ LH (Lower Head)","offer_id":47994739949717,"sku":"AN4.25LH","price":2974.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 6.0 cu ft \/ Standard","offer_id":47994739982485,"sku":"AN6.0","price":3329.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 6.0 cu ft \/ LH (Lower Head)","offer_id":47994740015253,"sku":"AN6.0LH","price":3559.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 10.0 cu ft \/ Standard","offer_id":47994740048021,"sku":"AN10.0","price":4279.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 10.0 cu ft \/ LH (Lower Head)","offer_id":47994740080789,"sku":"AN10.0LH","price":4437.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/8e8dee6e-2915-4235-b37c-5308f2235581_1785087743.webp?v=1789440251"},{"product_id":"poliglass-bead-polishing-filter","title":"GC Tek PoliGlassBead Polishing Filter","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 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.brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek PoliGlassBead · fine polishing filter · down to 3 microns\u003c\/p\u003e\n\u003ch2\u003eThe last filter in line, and the reason you can see the bottom drain at 6 feet\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eTwo media in one tank: black AlphaBio2 media up top pre-separates the larger solids on the way down, then a bed of \u003cem\u003etrue glass beads\u003c\/em\u003e (not crushed glass) strips the fines. Glass spheres don't bond together the way crushed glass does, so backwash stays easy. GC Tek's test pond — 10,000 gallons on a PoliGlassBead 5K, half the suggested size — went from koi visible only in the top 12\" to bottom drain visible at 6 feet in three days.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eTrue glass beads\u003c\/h3\u003e\n\u003cp\u003eSpherical beads filter down to ~3 microns and won't clump like crushed-glass media.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eAlphaBio2 pre-separation\u003c\/h3\u003e\n\u003cp\u003eA sinking layer catches the bigger stuff first so the glass bed does only polishing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e2 HP agitator, 58 psi tank\u003c\/h3\u003e\n\u003cp\u003eAgitator standard; blowers now sit below the lid line. 8\" clear lid. Fiberglass tank rated above the usual 50 psi.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003ePolish on demand\u003c\/h3\u003e\n\u003cp\u003ePlumb it last with a 3-way valve and divert water through it only when you want the extra polish — or run it full-time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003ePorts\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e5K\u003c\/td\u003e\n\u003ctd\u003e5,000 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$2,374.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10K\u003c\/td\u003e\n\u003ctd\u003e10,000 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$2,754.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e17K\u003c\/td\u003e\n\u003ctd\u003e17,000 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$3,514.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30K\u003c\/td\u003e\n\u003ctd\u003e30,000 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$4,369.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e17.3K\u003c\/td\u003e\n\u003ctd\u003e17,000 gal\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e$4,099.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30.3K\u003c\/td\u003e\n\u003ctd\u003e30,000 gal\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e$5,177.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003ePolishing, not primary.\u003c\/b\u003e The PoliGlassBead is designed to run after a main biological filter (AlphaONE, AquaBead, AlphaNANO or a bakki shower), not stand alone. Order it with a WattMizer PLUS system and GC Tek can plumb it into the pad.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/alphabio2-sinking-media\"\u003eAlphaBio2 sinking media\u003c\/a\u003e\u003ca href=\"\/products\/uniclear-filter\"\u003eUniClear carbon filter (removes color)\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-pressure-filters\"\u003ePressure filters\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"17.3K — 3\" ports, up to 17,000 gal","offer_id":47994774454421,"sku":"PGB17.3K","price":4099.95,"currency_code":"USD","in_stock":true},{"title":"30.3K — 3\" ports, up to 30,000 gal","offer_id":47994774487189,"sku":"PGB30.3K","price":5177.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/products\/C347.jpg?v=1588954104"},{"product_id":"pondkeeper-filter","title":"GC Tek PondKeeper Filter","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct 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0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek PondKeeper · value bead filter · agitator now standard\u003c\/p\u003e\n\u003ch2\u003eReal GC Tek filtration for the water garden budget\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eThe PondKeeper is GC Tek's affordable pressure filter: a thermoplastic tank, GC Tek's own PondKeeper media, a 6-position multiport valve, and — new for 2024 — a 2 HP media agitator and heavier-duty spring check valve as standard equipment. Every model is now the LP (Lower Profile) version, easier to hide behind the waterfall. FLUFF-N-SPIN backwash jets spin each piece of media clean without stripping the bacteria you want to keep.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eAgitator standard\u003c\/h3\u003e\n\u003cp\u003eThe same 2 HP blower the big filters use, mounted low so it's easy to conceal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003ePondKeeper media\u003c\/h3\u003e\n\u003cp\u003eProtective shape keeps beneficial bacteria safe through backwash; no clogging, no channeling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eNo two-speed pump\u003c\/h3\u003e\n\u003cp\u003eBackwashes on the same pump that runs the pond. About 3 minutes a week, no dirty hands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eLower profile\u003c\/h3\u003e\n\u003cp\u003eLP is now standard on all four sizes — shorter tank, easier install.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003eFish load\u003c\/th\u003e\n\u003cth\u003eTank (dia × H)\u003c\/th\u003e\n\u003cth\u003eValve\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.25 cu ft\u003c\/td\u003e\n\u003ctd\u003e1,500 gal\u003c\/td\u003e\n\u003ctd\u003e60 lb\u003c\/td\u003e\n\u003ctd\u003e16.5\" x 36\"\u003c\/td\u003e\n\u003ctd\u003e1.5\" openings, 2\" unions\u003c\/td\u003e\n\u003ctd\u003e$1,399.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.75 cu ft\u003c\/td\u003e\n\u003ctd\u003e2,500 gal\u003c\/td\u003e\n\u003ctd\u003e90 lb\u003c\/td\u003e\n\u003ctd\u003e19.5\" x 37\"\u003c\/td\u003e\n\u003ctd\u003e1.5\" openings, 2\" unions\u003c\/td\u003e\n\u003ctd\u003e$1,649.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.5 cu ft\u003c\/td\u003e\n\u003ctd\u003e5,000 gal\u003c\/td\u003e\n\u003ctd\u003e125 lb\u003c\/td\u003e\n\u003ctd\u003e21.5\" x 39.5\"\u003c\/td\u003e\n\u003ctd\u003e1.5\" openings, 2\" unions\u003c\/td\u003e\n\u003ctd\u003e$1,699.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4.0 cu ft\u003c\/td\u003e\n\u003ctd\u003e10,000 gal\u003c\/td\u003e\n\u003ctd\u003e200 lb\u003c\/td\u003e\n\u003ctd\u003e24.5\" x 42.5\"\u003c\/td\u003e\n\u003ctd\u003e1.5\" openings, 2\" unions\u003c\/td\u003e\n\u003ctd\u003e$2,169.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003eKoi pond or water garden?\u003c\/b\u003e PondKeeper ratings assume a water-garden fish load. If you're keeping koi seriously, step up to the AlphaONE family or go one PondKeeper size larger.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/pondkeeper-system\"\u003ePondKeeper complete systems\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-pressure-filters\"\u003eAlphaONE \/ AquaBead \/ AlphaNANO\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"1.25 cu ft","offer_id":34247856226349,"sku":"PK1.25","price":1399.95,"currency_code":"USD","in_stock":true},{"title":"1.75 cu ft","offer_id":34247856259117,"sku":"PK1.75","price":1684.95,"currency_code":"USD","in_stock":true},{"title":"2.5 cu ft","offer_id":34247856291885,"sku":"PK2.5","price":1699.95,"currency_code":"USD","in_stock":true},{"title":"4.0 cu ft","offer_id":34247856324653,"sku":"PK4.0","price":2259.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/products\/pondkeeper1.75.jpg?v=1588876728"},{"product_id":"uniclear-filter","title":"GC Tek UniClear Carbon Polishing Filter","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek UniClear · carbon polishing filter · removes tannin color\u003c\/p\u003e\n\u003ch2\u003eClear water that still looks yellow? This is the fix.\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003ePlenty of ponds are perfectly clear and the whites on the koi still look off-white. That's dissolved color — tannins — and no bead filter removes it. The UniClear runs high-grade carbon in a backwashable, lower-profile tank with a 2 HP agitator, absorbing the color while giving the water a final polish of fines. When the carbon stops pulling color, replace it. New for this generation: a larger carbon size and lateral assembly that stretch the interval between backwashes.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003ePulls the color\u003c\/h3\u003e\n\u003cp\u003eHigh-grade activated carbon absorbs tannins so whites read white and reds pop.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003ePolishes too\u003c\/h3\u003e\n\u003cp\u003eTraps fines on the way through for the clearest water attainable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eBackwashable\u003c\/h3\u003e\n\u003cp\u003eSpring check valve and 2 HP media agitator included; carbon is replaceable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eRun it when you need it\u003c\/h3\u003e\n\u003cp\u003ePlumb with two 3-way valves and divert flow through it only when color builds — or run continuously.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.75 cu ft — up to 5,000 gal\u003c\/td\u003e\n\u003ctd\u003e5,000 gal\u003c\/td\u003e\n\u003ctd\u003e$1,424.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.5 cu ft — up to 10,000 gal\u003c\/td\u003e\n\u003ctd\u003e10,000 gal\u003c\/td\u003e\n\u003ctd\u003e$1,594.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4.0 cu ft — up to 17,000 gal\u003c\/td\u003e\n\u003ctd\u003e17,000 gal\u003c\/td\u003e\n\u003ctd\u003e$1,959.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003eAll UniClear units are the LP lower-profile design. Custom and 3\" sizes are available — ask us.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/poliglass-bead-polishing-filter\"\u003ePoliGlassBead polishing filter\u003c\/a\u003e\u003ca href=\"\/products\/3-way-valve-2-2-5-3wv-2\"\u003e2-way \/ 3-way valves\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"1.75 cu ft — up to 5,000 gal","offer_id":45738481582229,"sku":"UNC1.75","price":1424.95,"currency_code":"USD","in_stock":true},{"title":"2.5 cu ft — up to 10,000 gal","offer_id":34247895351341,"sku":"UC2.5","price":1594.95,"currency_code":"USD","in_stock":true},{"title":"4.0 cu ft — up to 17,000 gal","offer_id":34247895384109,"sku":"UC4.0","price":1959.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/products\/Pondkeeper6_843a7f8b-692e-47bc-a182-f4a8f86b4c19.jpg?v=1588877091"},{"product_id":"zapp-pure-ultraviolet-clarifier","title":"GC Tek Zapp Pure High-Intensity UV Clarifier","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe 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th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek Zapp Pure · high-intensity single-lamp UV · brushed stainless\u003c\/p\u003e\n\u003ch2\u003e70,000 µW-plus from one lamp\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eRedesigned brushed stainless steel body with new union connections, a clear viewing connection so you can see the lamp is lit, and a single high-intensity lamp so maintenance is one lamp, one sleeve. A higher-grade electronic ballast for long life. 2\" unions on every model.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eSingle high-intensity lamp\u003c\/h3\u003e\n\u003cp\u003eOne lamp with 70,000+ microwatt output — economical to maintain.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eBrushed stainless\u003c\/h3\u003e\n\u003cp\u003eEasy-care finish, redesigned unions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eSee it working\u003c\/h3\u003e\n\u003cp\u003eClear connection shows lamp on\/off at a glance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e2\" unions\u003c\/h3\u003e\n\u003cp\u003eDrops into standard 2\" plumbing on any GC Tek system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003eFlow\u003c\/th\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eZP-5\u003c\/td\u003e\n\u003ctd\u003e6,600 gal\u003c\/td\u003e\n\u003ctd\u003e2,200 gph\u003c\/td\u003e\n\u003ctd\u003e21\"\u003c\/td\u003e\n\u003ctd\u003e$1,499.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZP-10\u003c\/td\u003e\n\u003ctd\u003e12,000 gal\u003c\/td\u003e\n\u003ctd\u003e4,000 gph\u003c\/td\u003e\n\u003ctd\u003e32\"\u003c\/td\u003e\n\u003ctd\u003e$1,799.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZP-20\u003c\/td\u003e\n\u003ctd\u003e18,000 gal\u003c\/td\u003e\n\u003ctd\u003e6,048 gph\u003c\/td\u003e\n\u003ctd\u003e43\"\u003c\/td\u003e\n\u003ctd\u003e$2,099.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note warn\"\u003e\n\u003cb\u003eBigger than 18,000 gallons?\u003c\/b\u003e The ZP-40.3 and the dual-lamp ZP6600 \/ ZP8800 are discontinued. GC Tek's replacement is the 316 stainless NishikigoiUV amalgam line (H110 \/ H165 \/ H220 \/ H400 \/ H480) — call us for pricing; we'll be adding them to the site.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/zapp-pure-ultraviolet-light-replacement-parts\"\u003eZapp Pure lamps, sleeves \u0026amp; ballasts\u003c\/a\u003e\u003ca href=\"\/products\/zap-pro-116-ho-ultraviolet-light\"\u003eZapPRO 116 W dual-lamp UV\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"ZP-5 — up to 6,600 gal","offer_id":34248073478189,"sku":"ZP5U","price":1499.95,"currency_code":"USD","in_stock":true},{"title":"ZP-10 — up to 12,000 gal","offer_id":34248073510957,"sku":"ZP10U","price":1799.95,"currency_code":"USD","in_stock":true},{"title":"ZP-20 — up to 18,000 gal","offer_id":34248073543725,"sku":"ZP20U","price":2099.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/products\/zap.jpg?v=1589039690"},{"product_id":"zapp-pure-ultraviolet-light-replacement-parts","title":"GC Tek Zapp Pure UV Replacement Parts","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe 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details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek Zapp Pure · genuine replacement parts\u003c\/p\u003e\n\u003ch2\u003eLamps, quartz sleeves, ballasts and fittings for every Zapp Pure\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eLamps are rated for about a year of continuous use — replace annually for full output even if they still glow. The ZP-40 lamp and sleeve also fit the ZP-40.3, 80.3 and 160.3. Ballasts are shared between the 5\/10 and 20\/40 sizes. In-stock parts ship from Upland, CA.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp — ZP-5\u003c\/td\u003e\n\u003ctd\u003e$129.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp — ZP-10\u003c\/td\u003e\n\u003ctd\u003e$152.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp — ZP-20\u003c\/td\u003e\n\u003ctd\u003e$179.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp — ZP-40 \/ 40.3 \/ 80.3 \/ 160.3\u003c\/td\u003e\n\u003ctd\u003e$199.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuartz sleeve — ZP-5\u003c\/td\u003e\n\u003ctd\u003e$73.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuartz sleeve — ZP-10\u003c\/td\u003e\n\u003ctd\u003e$99.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuartz sleeve — ZP-20\u003c\/td\u003e\n\u003ctd\u003e$137.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuartz sleeve — ZP-40 series\u003c\/td\u003e\n\u003ctd\u003e$159.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBallast — ZP-5 \/ ZP-10\u003c\/td\u003e\n\u003ctd\u003e$132.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBallast — ZP-20 \/ ZP-40\u003c\/td\u003e\n\u003ctd\u003e$161.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuartz tube gasket set (all Zapps)\u003c\/td\u003e\n\u003ctd\u003e$15.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4-pin lamp connector (all Zapps)\u003c\/td\u003e\n\u003ctd\u003e$21.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear inlet\/outlet tail piece 2\"\u003c\/td\u003e\n\u003ctd\u003e$23.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlack locking ring inlet\/outlet 2\"\u003c\/td\u003e\n\u003ctd\u003e$24.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet\/outlet gaskets 2\"\u003c\/td\u003e\n\u003ctd\u003e$12.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/zapp-pure-ultraviolet-clarifier\"\u003eZapp Pure UV units\u003c\/a\u003e\u003ca href=\"\/products\/zap-pro-lamp-zprl\"\u003eZapPRO parts\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Lamp — ZP-5","offer_id":34248711700525,"sku":"ZP5L","price":129.95,"currency_code":"USD","in_stock":true},{"title":"Lamp — ZP-10","offer_id":34248711733293,"sku":"ZP10L","price":152.95,"currency_code":"USD","in_stock":true},{"title":"Lamp — ZP-20","offer_id":34248711766061,"sku":"ZP20L","price":179.95,"currency_code":"USD","in_stock":true},{"title":"Lamp — ZP-40 \/ 40.3 \/ 80.3 \/ 160.3","offer_id":34248711798829,"sku":"ZP40L","price":199.95,"currency_code":"USD","in_stock":true},{"title":"Quartz sleeve — ZP-5","offer_id":34248711831597,"sku":"ZP5QT","price":73.75,"currency_code":"USD","in_stock":true},{"title":"Quartz sleeve — ZP-10","offer_id":34248711864365,"sku":"ZP10QT","price":99.95,"currency_code":"USD","in_stock":true},{"title":"Quartz sleeve — ZP-20","offer_id":34248711897133,"sku":"ZP20QT","price":137.95,"currency_code":"USD","in_stock":true},{"title":"Quartz sleeve — ZP-40 series","offer_id":34248711929901,"sku":"ZP40QT","price":159.95,"currency_code":"USD","in_stock":true},{"title":"Ballast — ZP-5 \/ ZP-10","offer_id":34248711962669,"sku":"ZP5\/10B","price":132.95,"currency_code":"USD","in_stock":true},{"title":"Ballast — ZP-20 \/ ZP-40","offer_id":34248711995437,"sku":"ZP20\/40B","price":161.95,"currency_code":"USD","in_stock":true},{"title":"Quartz tube gasket set (all Zapps)","offer_id":47994738901141,"sku":"ZPQTGAS","price":15.95,"currency_code":"USD","in_stock":true},{"title":"4-pin lamp connector (all Zapps)","offer_id":47994738933909,"sku":"ZPW4PIN","price":21.95,"currency_code":"USD","in_stock":true},{"title":"Clear inlet\/outlet tail piece 2\"","offer_id":47994738966677,"sku":"ZPCLTLPE2","price":23.95,"currency_code":"USD","in_stock":true},{"title":"Black locking ring inlet\/outlet 2\"","offer_id":47994738999445,"sku":"ZPBLR12","price":24.95,"currency_code":"USD","in_stock":true},{"title":"Inlet\/outlet gaskets 2\"","offer_id":47994739032213,"sku":"ZPGAS12","price":12.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/products\/C230.jpg?v=1588954433"},{"product_id":"zap-pro-116-ho-ultraviolet-light","title":"GC Tek ZapPRO 116 W HO Dual-Lamp UV","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek ZapPRO · 116 W HO dual lamp · up to 7,800 gph\u003c\/p\u003e\n\u003ch2\u003eThe best buy in high-performance UV\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eTwo 58 W high-output lamps in an 11.5\" × 33.8\" heavy-duty vessel rated to 50 psi. 13,000-hour lamp life, 120 or 240 volt, a cover-mounted green LED for power, a ventilated glow ring to confirm the lamps are lit, integrated fault protection that prevents start-up if a lamp has a problem, a safety cover switch and an easy drain for winterizing.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003e116 HO watts\u003c\/h3\u003e\n\u003cp\u003eTwo 58 W high-output lamps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e13,000-hour lamps\u003c\/h3\u003e\n\u003cp\u003eLong service interval; fault protection guards the ballast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eGlow ring + LED\u003c\/h3\u003e\n\u003cp\u003eConfirm power and lamp status without opening anything.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eWinter-ready\u003c\/h3\u003e\n\u003cp\u003eEasy-use drain empties the vessel for storage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamps\u003c\/td\u003e\n\u003ctd\u003e2 × 58 W HO (116 W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax flow\u003c\/td\u003e\n\u003ctd\u003e7,800 gph\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e11.5\" dia × 33.8\" H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure\u003c\/td\u003e\n\u003ctd\u003e50 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e120 or 240 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$1,495.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/zap-pro-lamp-zprl\"\u003eZapPRO lamps, quartz, ballast, unions\u003c\/a\u003e\u003ca href=\"\/products\/zapp-pure-ultraviolet-clarifier\"\u003eZapp Pure single-lamp UV\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Default Title","offer_id":34248759410733,"sku":"ZPRO","price":1495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/products\/FILE-20200218-21091VEGVK9EKVKA.jpg?v=1588954279"},{"product_id":"aqua-sieve-2-pond-strainer","title":"GC Tek AquaSieve Solids-Separator Prefilter","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid 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solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek AquaSieve · solids separator before the pump · plastic or 316 stainless · 2\" to 4\"\u003c\/p\u003e\n\u003ch2\u003eStop being a slave to the pump basket\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003ePumps and filters always work better with a solids separator ahead of the pump. The \u003cb\u003eAquaSieve2\u003c\/b\u003e is a 12\" x 27\" high-impact, implosion-resistant vessel with a huge strainer basket and a clear lid — the leaves and debris that clog a pump basket in a day collect here instead, and most owners empty it every one to four weeks. The \u003cb\u003eAquaSieve SS\u003c\/b\u003e is the industrial version, new and heavier for 2026: heavy-gauge polished 316 stainless, 10\" x 29\", stainless basket with 1\/8\" holes, positive-seal lid and a water drain fitting — in 2\", 3\" and 4\".\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eHuge basket\u003c\/h3\u003e\n\u003cp\u003eWeeks between cleanings instead of days.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003ePrimes the pump\u003c\/h3\u003e\n\u003cp\u003eBuilt-in reservoir helps the pump prime and protects it from running dry.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eClear lid (AquaSieve2)\u003c\/h3\u003e\n\u003cp\u003eSee when it needs emptying without opening it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e316 stainless (SS models)\u003c\/h3\u003e\n\u003cp\u003eHeavy-gauge polished stainless body and basket, 1\/8\" perforations. The 3\" is also available with opposing-side openings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eBody\u003c\/th\u003e\n\u003cth\u003ePorts\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAquaSieve2\u003c\/td\u003e\n\u003ctd\u003eHigh-impact plastic\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e12\" dia x 27\" H\u003c\/td\u003e\n\u003ctd\u003e$524.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAquaSieve2.2 SS\u003c\/td\u003e\n\u003ctd\u003eHigh-impact plastic\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e10\" dia x 29\" H\u003c\/td\u003e\n\u003ctd\u003e$699.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAquaSieve3.3 SS\u003c\/td\u003e\n\u003ctd\u003eHigh-impact plastic\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e10\" dia x 29\" H\u003c\/td\u003e\n\u003ctd\u003e$1,099.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAquaSieve4.4 SS\u003c\/td\u003e\n\u003ctd\u003eHigh-impact plastic\u003c\/td\u003e\n\u003ctd\u003e4\"\u003c\/td\u003e\n\u003ctd\u003e10\" dia x 29\" H\u003c\/td\u003e\n\u003ctd\u003e$1,149.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003eUse the AquaSieve \u003cb\u003ebefore\u003c\/b\u003e the pump and a MultiCyclone \u003cb\u003eafter\u003c\/b\u003e it and you'll have the happiest filter and fish you can have. The 3\" and 4\" stainless units are what GC Tek specs on the MegaSystem3 and the big drum-filter builds.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-multicyclone-50-prefilter\"\u003eMultiCyclone 50\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-aquasieve2-replacement-parts\"\u003eAquaSieve2 replacement parts\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-nishikigoi-rdf-drum-filter\"\u003eNishikigoiRDF drum filters\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"AquaSieve2 — 2\" (high-impact plastic, clear lid)","offer_id":34259828310061,"sku":"AS2","price":524.95,"currency_code":"USD","in_stock":true},{"title":"AquaSieve2.2 SS — 2\" (316 stainless)","offer_id":48002879324309,"sku":"AS2.2","price":699.95,"currency_code":"USD","in_stock":true},{"title":"AquaSieve3.3 SS — 3\" (316 stainless)","offer_id":34259828342829,"sku":"AS3.3","price":1099.95,"currency_code":"USD","in_stock":true},{"title":"AquaSieve4.4 SS — 4\" (316 stainless)","offer_id":48002879357077,"sku":"AS4.4","price":1149.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/products\/1523146588AQUASIEVE2PIC_WCLEARLID.jpg?v=1588952701"},{"product_id":"media-agitator-retro-kit","title":"GC Tek Media Agitator Retro 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var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek media agitator retro kit · add a blower to any filter\u003c\/p\u003e\n\u003ch2\u003eGive your bead or sand filter the backwash it never had\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eSome filters ship without a blower but would really benefit from one. This kit is everything a pond keeper needs to add media agitation to a filter: the 2 HP agitator, the spring check valve and the fittings. Choose the version that matches your multiport — 1.5\" or 2\" — and tell us in the order notes whether the valve has female \u003cem\u003ethreaded\u003c\/em\u003e or female \u003cem\u003eslip\u003c\/em\u003e fittings so GC Tek sends the right adapters.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eComplete kit\u003c\/h3\u003e\n\u003cp\u003eAgitator, check valve and fittings as pictured.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e1.5\" or 2\"\u003c\/h3\u003e\n\u003cp\u003eMatch your multiport valve size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eThreaded or slip\u003c\/h3\u003e\n\u003cp\u003eNote the fitting type at checkout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eAny bead or sand filter\u003c\/h3\u003e\n\u003cp\u003eNot just GC Tek units.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eKit\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.5\" inlet\u003c\/td\u003e\n\u003ctd\u003e$529.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\" inlet\u003c\/td\u003e\n\u003ctd\u003e$529.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/ab-2-hp-blower\"\u003eReplacement agitator only\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"1.5\" inlet","offer_id":47994737197205,"sku":"MARK1.5","price":529.95,"currency_code":"USD","in_stock":true},{"title":"2\" inlet","offer_id":34249101967405,"sku":"MARK2","price":529.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/products\/C278.jpg?v=1588953959"},{"product_id":"the-liberator-auto-back-wash-cleaning-system","title":"GC Tek TheLiberator Automatic Backwash System","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. We'll confirm the ship date and any oversize shipping with you before it goes out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek TheLiberator · automatic backwash · redesigned 2025 · smartphone controllable\u003c\/p\u003e\n\u003ch2\u003eThe filter that cleans itself\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eTheLiberator replaces the manual multiport on an AlphaONE, AquaBead or AlphaNANO with a motorized valve and controller. On schedule it shuts off the pump, turns on the media agitator, runs the backwash, runs the rinse, resets to filter and restarts the pump — all by itself. The 2025 redesign adds smartphone control. The valve body has very little restriction, on par with the LH valve assembly.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eSix steps, zero hands\u003c\/h3\u003e\n\u003cp\u003ePump off → agitator on → backwash → rinse → reset to filter → pump on.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eSmartphone control\u003c\/h3\u003e\n\u003cp\u003eSchedule and trigger cycles from your phone (2025 redesign).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eLow restriction\u003c\/h3\u003e\n\u003cp\u003eFlow characteristics similar to the LH bypass — no head penalty for automation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eAdd to any system\u003c\/h3\u003e\n\u003cp\u003eOrder with a PLUS or PLUS PRO system and GC Tek plumbs it on the pad; retrofits existing GC Tek filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\" model\u003c\/td\u003e\n\u003ctd\u003e2\" multiport filters (1.75–10.0, X2)\u003c\/td\u003e\n\u003ctd\u003e$3,795.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\" model\u003c\/td\u003e\n\u003ctd\u003e3\" multiport filters (6.3, 10.3, Megladon)\u003c\/td\u003e\n\u003ctd\u003e$3,995.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003ePair with dual AquaSieve2 prefilters and your weekly routine becomes emptying two baskets. Control panel mounts to a wall or fence (about 18\" × 18\" × 5\"), outdoor rated.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-pressure-filters\"\u003ePressure filters\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-wattmizer-plus-pro-system\"\u003eWattMizer PLUS PRO systems\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs there extra shipping?\u003c\/summary\u003e\u003cp\u003eThis item is oversize for standard UPS rates. We'll confirm the exact shipping before it goes out.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"2\" model","offer_id":34249131556909,"sku":"LIB-2","price":3795.0,"currency_code":"USD","in_stock":true},{"title":"3\" model","offer_id":47994782023829,"sku":"LIB-3","price":3995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/products\/1582490313AUTOBACKWASHWSHAD.jpg?v=1588954237"},{"product_id":"alphaone-3-port-mega-filters","title":"GC Tek 6.3 \/ 10.3 Pressure Filter — 3\" Ports","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek 6.3 \u0026amp; 10.3 · 3\" Super Hi-Flow multiport · for the all-3\" system\u003c\/p\u003e\n\u003ch2\u003eWhen you want to move a lot of water for very little energy\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eTake the 6.0 or 10.0 tank, fit GC Tek's 3\" Hi-Flow multiport and 3\" unions, and friction loss drops hard. That lets a 3\" Artesian Pro pump turn a 20,000–30,000 gallon pond at low RPM. Pair it with the AquaSieve 3.3 SS prefilter and a 3\" NishikigoiUV and you have GC Tek's MegaSystem3 in pieces.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003e3\" everything\u003c\/h3\u003e\n\u003cp\u003e3\" multiport, 3\" unions, clear lid. Built for 3\" plumbing runs where 2\" would cost you head.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eSame tank, more rating\u003c\/h3\u003e\n\u003cp\u003eThe 10.3 is rated to 30,000 gal and 500 lb of koi at up to 180 gpm — the 3\" valve is what unlocks it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eYour media choice\u003c\/h3\u003e\n\u003cp\u003eAlphaBioONE (AlphaONE), BioGems (AquaBead) or AlphaNANO — same price either way.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eFull GC Tek kit\u003c\/h3\u003e\n\u003cp\u003eOmnifuser, 2 HP agitator, ALISS valve, EZ Drain, limited lifetime tank warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eMedia\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003eFish load\u003c\/th\u003e\n\u003cth\u003eTank\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e6.3 (6 cu ft)\u003c\/td\u003e\n\u003ctd\u003eAO \/ AB \/ AN\u003c\/td\u003e\n\u003ctd\u003e20,000 gal\u003c\/td\u003e\n\u003ctd\u003e300 lb\u003c\/td\u003e\n\u003ctd\u003e30.4\" x 40\"\u003c\/td\u003e\n\u003ctd\u003e$4,099.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10.3 (10 cu ft)\u003c\/td\u003e\n\u003ctd\u003eAO \/ AB \/ AN\u003c\/td\u003e\n\u003ctd\u003e30,000 gal\u003c\/td\u003e\n\u003ctd\u003e500 lb\u003c\/td\u003e\n\u003ctd\u003e36.4\" x 45\"\u003c\/td\u003e\n\u003ctd\u003e$5,264.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-pressure-filters\"\u003e2\" filters\u003c\/a\u003e\u003ca href=\"\/products\/aqua-sieve-2-pond-strainer\"\u003eAquaSieve 3.3 SS prefilter\u003c\/a\u003e\u003ca href=\"\/products\/poliglass-bead-polishing-filter\"\u003ePoliGlassBead 17.3K \/ 30.3K (3\")\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"AquaBead \/ 6.3 (6 cu ft)","offer_id":47994749321365,"sku":"AB6.3","price":4099.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 10.3 (10 cu ft)","offer_id":47994749354133,"sku":"AB10.3","price":5264.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 6.3 (6 cu ft)","offer_id":47994749386901,"sku":"AN6.3","price":4099.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 10.3 (10 cu ft)","offer_id":47994749419669,"sku":"AN10.3","price":5264.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/products\/1510527764mthumb.php-5.jpg?v=1588953823"},{"product_id":"pondkeeper-system","title":"GC Tek PondKeeper Complete System","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek PondKeeper system · complete water-garden \u0026amp; quarantine package\u003c\/p\u003e\n\u003ch2\u003eEverything on one pad, ready to go\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eA PondKeeper filter with 2 HP media agitator, an Artesian2 external pump (no oil to leak into the pond, far more efficient than a submersible) and a 316 stainless NishikigoiUV-H80 amalgam UV, pre-plumbed on a 36\" × 48\" all-weather pad with media in the tank. 2\" unions at every fitting. Backwash is about three minutes a week with no dirty hands; winterize in minutes. Just the thing for water gardens and quarantine systems.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eOut-of-pond pump\u003c\/h3\u003e\n\u003cp\u003eArtesian2 pumps from Performance Pro — quiet, efficient, 3-year warranty, plenty of push for backwash.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eNishikigoiUV-H80\u003c\/h3\u003e\n\u003cp\u003e316 stainless, 80 W amalgam lamp, lifetime vessel warranty. Standard on all PondKeeper systems from 6\/1\/26.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eBeefier spring check\u003c\/h3\u003e\n\u003cp\u003eThe same heavy-duty check valve GC Tek fits to its side-mount filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eCords included\u003c\/h3\u003e\n\u003cp\u003ePump and UV come with cords; set the pad, connect in\/out, plug in.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003eFish load\u003c\/th\u003e\n\u003cth\u003ePump\u003c\/th\u003e\n\u003cth\u003eUV\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePondKeeper 1500 — up to 1,500 gal\u003c\/td\u003e\n\u003ctd\u003e1,500 gal\u003c\/td\u003e\n\u003ctd\u003e60 lb\u003c\/td\u003e\n\u003ctd\u003e1\/2 HP Artesian2 HF\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-H80 (80 W)\u003c\/td\u003e\n\u003ctd\u003e$3,254.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePondKeeper 2500 — up to 2,500 gal\u003c\/td\u003e\n\u003ctd\u003e2,500 gal\u003c\/td\u003e\n\u003ctd\u003e90 lb\u003c\/td\u003e\n\u003ctd\u003e1\/2 HP Artesian2 HF\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-H80 (80 W)\u003c\/td\u003e\n\u003ctd\u003e$3,386.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePondKeeper 5000 — up to 5,000 gal\u003c\/td\u003e\n\u003ctd\u003e5,000 gal\u003c\/td\u003e\n\u003ctd\u003e125 lb\u003c\/td\u003e\n\u003ctd\u003e3\/4 HP Artesian2 HF\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-H80 (80 W)\u003c\/td\u003e\n\u003ctd\u003e$3,599.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/pondkeeper-filter\"\u003ePondKeeper filter alone\u003c\/a\u003e\u003ca href=\"\/products\/koikeeper-pond-filteration-system\"\u003eWattMizer KoiKeeper (koi-rated)\u003c\/a\u003e\u003ca href=\"\/collections\/gc-tek-systems\"\u003eAll GC Tek systems\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"PondKeeper 1500 — up to 1,500 gal","offer_id":34474464182421,"sku":"PK1500","price":3254.95,"currency_code":"USD","in_stock":true},{"title":"PondKeeper 2500 — up to 2,500 gal","offer_id":34474464215189,"sku":"PK2500","price":3186.95,"currency_code":"USD","in_stock":true},{"title":"PondKeeper 5000 — up to 5,000 gal","offer_id":34474464247957,"sku":"PK5000","price":3599.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/products\/pondkeeper.jpg?v=1590790501"},{"product_id":"koikeeper-pond-filteration-system","title":"GC Tek WattMizer KoiKeeper System","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto 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details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek WattMizer KoiKeeper · complete system · 2.5K \/ 5K \/ 10K\u003c\/p\u003e\n\u003ch2\u003eThe simple, no-options koi system\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eFilter, low-RPM Artesian2 pump and a 316 stainless NishikigoiUV-H80 pre-plumbed on a 36\" × 48\" all-weather pad. The KoiKeeper is deliberately kept simple — three sizes, no options — so a good system stays affordable. If you live where electricity is tiered, the low-RPM pump is the point: 320–630 watts to run the whole pond. Need a prefilter, a different pump or a bigger UV? Step up to the WattMizer PLUS.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003ePre-plumbed at the factory\u003c\/h3\u003e\n\u003cp\u003eGC Tek physically assembles every system, marks every union, then breaks it down into boxes. You set the pads, hand-tighten the numbered unions and connect pond in\/out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eArtesian2 pumps\u003c\/h3\u003e\n\u003cp\u003ePerformance Pro external pumps custom-specced for GC Tek — quiet, energy-efficient, 3-year warranty, plenty of power for a proper backwash.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e316 stainless NishikigoiUV\u003c\/h3\u003e\n\u003cp\u003eMarine-grade 316 (not 304) stainless amalgam UV with individual ballasts, lamp indicators and an hour meter. 13,000-hour lamps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eYour filter, your media\u003c\/h3\u003e\n\u003cp\u003eChoose AlphaONE, AquaBead or AlphaNANO media in the filter. Same price either way.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eChoose your size\u003c\/h3\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003eFish load\u003c\/th\u003e\n\u003cth\u003ePump\u003c\/th\u003e\n\u003cth\u003eUV\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.5K — up to 2,500 gal\u003c\/td\u003e\n\u003ctd\u003e2,500 gal\u003c\/td\u003e\n\u003ctd\u003e90 lb\u003c\/td\u003e\n\u003ctd\u003e1\/4 HP Artesian2 (320 W)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-H80 (80 W, 316 SS)\u003c\/td\u003e\n\u003ctd\u003e$4,072.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5K — up to 5,000 gal\u003c\/td\u003e\n\u003ctd\u003e5,000 gal\u003c\/td\u003e\n\u003ctd\u003e125 lb\u003c\/td\u003e\n\u003ctd\u003e1\/3 HP Artesian2 (440 W)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-H80 (80 W, 316 SS)\u003c\/td\u003e\n\u003ctd\u003e$4,534.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10K — up to 10,000 gal\u003c\/td\u003e\n\u003ctd\u003e10,000 gal\u003c\/td\u003e\n\u003ctd\u003e225 lb\u003c\/td\u003e\n\u003ctd\u003e1\/2 HP Artesian2 (630 W)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-H80 (80 W, 316 SS)\u003c\/td\u003e\n\u003ctd\u003e$4,899.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003eWhat's on the pad:\u003c\/b\u003e AlphaONE \/ AquaBead \/ AlphaNANO filter with 2 HP agitator · Artesian2 low-RPM pump with cord · NishikigoiUV-H80 80 W amalgam UV (316 SS) · all unions and plumbing, media loaded. Starting 6\/1\/26 all KoiKeeper systems ship with the H80 UV (a higher-output unit than earlier photos show).\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-wattmizer-plus-system\"\u003eWattMizer PLUS (adds prefilter option)\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-wattmizer-plus-pro-system\"\u003ePLUS PRO (dual prefilters)\u003c\/a\u003e\u003ca href=\"\/collections\/gc-tek-systems\"\u003eAll GC Tek systems\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"AlphaONE \/ 2.5K — up to 2,500 gal","offer_id":34474632446101,"sku":"KK2.5K-AO","price":4072.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 5K — up to 5,000 gal","offer_id":34474632478869,"sku":"KK5K-AO","price":4534.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 10K — up to 10,000 gal","offer_id":34474632511637,"sku":"KK10K-AO","price":4899.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 2.5K — up to 2,500 gal","offer_id":34474632544405,"sku":"KK2.5K-AB","price":4072.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 5K — up to 5,000 gal","offer_id":34474632577173,"sku":"KK5K-AB","price":4534.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 10K — up to 10,000 gal","offer_id":34474632609941,"sku":"KK10K-AB","price":4899.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 2.5K — up to 2,500 gal","offer_id":47994785530005,"sku":"KK2.5K-AN","price":4072.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 5K — up to 5,000 gal","offer_id":47994785562773,"sku":"KK5K-AN","price":4534.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 10K — up to 10,000 gal","offer_id":47994785595541,"sku":"KK10K-AN","price":4899.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/products\/10.0Koikeeper_large_061a9153-012e-4ac8-9841-be7dbe0d6782.jpg?v=1590779501"},{"product_id":"ab-1-5-hp-blower","title":"AB 1.5 HP Blower","description":"","brand":"GC Tek","offers":[{"title":"Default Title","offer_id":43569784586389,"sku":null,"price":279.95,"currency_code":"USD","in_stock":true}]},{"product_id":"ab-2-hp-blower","title":"GC Tek 2 HP Media Agitator (Blower)","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid 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12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek 2 HP media agitator · replacement blower\u003c\/p\u003e\n\u003ch2\u003eThe blower that makes backwash actually work\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eA 2 HP, 115 V regenerative blower delivering over 100 cubic feet per minute of air into the bottom of the tank. It violently tumbles the bead bed during backwash so trapped waste lets go and the media never compacts. Direct replacement for any GC Tek filter; also an excellent upgrade for any other bead or sand filter that struggles on backwash. 2\" connection, 6-ft cord with on\/off switch.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003e2 HP, 100+ CFM\u003c\/h3\u003e\n\u003cp\u003eEnough air to fluidize a 10 cu ft bed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e115 V, corded\u003c\/h3\u003e\n\u003cp\u003e6 ft cord and switch — plug and go.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eFits any GC Tek filter\u003c\/h3\u003e\n\u003cp\u003eAlphaONE, AquaBead, AlphaNANO, PondKeeper, UniClear, PoliGlassBead.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003ePair with a spring check\u003c\/h3\u003e\n\u003cp\u003eReplace the check valve at the same time if yours is over five years old.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e2 HP media agitator, 2\", 115 V\u003c\/td\u003e\n\u003ctd\u003e$339.95\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/blower-spring-check-valve\"\u003eSpring check valves\u003c\/a\u003e\u003ca href=\"\/products\/media-agitator-retro-kit\"\u003eRetro kit for other filters\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Default Title","offer_id":43569784619157,"sku":"AB2AG","price":339.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/c69_1745304772.webp?v=1789422981"},{"product_id":"alphaone-clear-lid","title":"GC Tek Clear Filter Lid","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek clear filter lid · fits 2010-to-current tanks\u003c\/p\u003e\n\u003ch2\u003eSee your media without opening the tank\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eClear replacement lids for current-style GC Tek tanks: 8\" for the 1.75, 10\" for the 2.5 through 10.0. Lids ship as just the lid — the bleeder valve, o-ring and plugs transfer over from your old lid. Pre-2010 tanks with the black top cap use the ABCAP top caps instead.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\" opening (1.75 filters)\u003c\/td\u003e\n\u003ctd\u003e$89.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10\" opening (2.5–10.0 filters)\u003c\/td\u003e\n\u003ctd\u003e$99.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\u003ca href=\"\/products\/gc-tek-filter-tank-parts\"\u003eTop caps for pre-2010 tanks\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"8\" opening (1.75 filters)","offer_id":43776776929429,"sku":"ATCLR8","price":89.95,"currency_code":"USD","in_stock":true},{"title":"10\" opening (2.5–10.0 filters)","offer_id":43776776962197,"sku":"ATCLR10","price":99.95,"currency_code":"USD","in_stock":true}]},{"product_id":"gctek-black-mulitport-union","title":"GCTek Black Multi-Port Union","description":"\u003cp\u003eBMU2\u003c\/p\u003e","brand":"GC Tek","offers":[{"title":"Default Title","offer_id":44740780818581,"sku":null,"price":15.0,"currency_code":"USD","in_stock":false}]},{"product_id":"blower-spring-check-valve","title":"GC Tek Media Agitator Spring Check Valves","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek media agitator spring check valves · by filter generation\u003c\/p\u003e\n\u003ch2\u003eStop backwash water from running back into the blower\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eThe spring check sits between the agitator and the tank. Pick by the era of your filter: SPRCK22 for 2022-to-current (single-union, the easy swap), ABSPCKVAL3 for 2010–2021 black-with-clear-front, ABSPCKVAL2 for 2004–2010 union style, ABSPCKVAL1 for the early double-union valves. Not sure? Send us a photo.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring check — 2022 to current filters (single union)\u003c\/td\u003e\n\u003ctd\u003e$99.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring check — 2010–2021 filters (black, clear front)\u003c\/td\u003e\n\u003ctd\u003e$99.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring check w\/ union — 2004–2010 filters\u003c\/td\u003e\n\u003ctd\u003e$94.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring check — early double-union filters\u003c\/td\u003e\n\u003ctd\u003e$99.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnion spring check — replacement for new-style union check\u003c\/td\u003e\n\u003ctd\u003e$94.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\u003ca href=\"\/products\/ab-2-hp-blower\"\u003e2 HP media agitator\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Spring check — 2022 to current filters (single union)","offer_id":44888070127765,"sku":"SPRCK22","price":99.95,"currency_code":"USD","in_stock":true},{"title":"Spring check — 2010–2021 filters (black, clear front)","offer_id":47994749452437,"sku":"ABSPCKVAL3","price":99.95,"currency_code":"USD","in_stock":true},{"title":"Spring check w\/ union — 2004–2010 filters","offer_id":47994749485205,"sku":"ABSPCKVAL2","price":94.95,"currency_code":"USD","in_stock":true},{"title":"Spring check — early double-union filters","offer_id":47994749517973,"sku":"ABSPCKVAL1","price":99.95,"currency_code":"USD","in_stock":true},{"title":"Union spring check — replacement for new-style union check","offer_id":47994749550741,"sku":"SPB","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/1675549274springcheckvalve2023_1745304916.webp?v=1789423275"},{"product_id":"alphabio2-sinking-media","title":"AlphaBio2 Sinking Media","description":"","brand":"GC Tek","offers":[{"title":"Default Title","offer_id":44989140041877,"sku":null,"price":149.95,"currency_code":"USD","in_stock":true}]},{"product_id":"water-co-half-union","title":"Water Co Half Union","description":"\u003cp\u003e2\" Union for GC tek Filters\/Multiports\u003c\/p\u003e","brand":"GC Tek","offers":[{"title":"Default Title","offer_id":45986781233301,"sku":null,"price":25.0,"currency_code":"USD","in_stock":false}]},{"product_id":"gc-tek-spider-gasket","title":"GC Tek Multiport Spider 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var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek spider gasket · multiport valve repair\u003c\/p\u003e\n\u003ch2\u003eLeaking between positions? Start here.\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eThe spider gasket is the star-shaped seal under the multiport handle. When water weeps from the waste line in Filter, or the pond drains into the waste line overnight, this is the usual culprit. 2\" fits every AquaBead \/ AlphaONE \/ AlphaNANO 2\" multiport; 3\" fits the 6.3, 10.3 and Megladon valves.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\" (all AB\/AO multiports)\u003c\/td\u003e\n\u003ctd\u003e$55.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\" multiport\u003c\/td\u003e\n\u003ctd\u003e$79.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\u003ca href=\"\/products\/multiport-valve-with-spring-check-valve\"\u003eFull multiport repair kit\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"2\" (all AB\/AO multiports)","offer_id":45994447372437,"sku":"SPG-A2","price":55.95,"currency_code":"USD","in_stock":true},{"title":"3\" multiport","offer_id":47994741260437,"sku":"SPG-A3","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/1582405353spidergasket_1745304866.jpg?v=1746213461"},{"product_id":"biogems-aquabead-filter-bead-media-1-cu-ft","title":"GC Tek Filter Media — BioGems \/ AlphaBioONE \/ AlphaNANO","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct 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summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek filter media · BioGems · AlphaBioONE · AlphaNANO · by the cubic foot\u003c\/p\u003e\n\u003ch2\u003eTop up, convert, or fill a new tank\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eGenuine GC Tek media in quarter, half, three-quarter and full cubic feet. \u003cb\u003eBioGems\u003c\/b\u003e is the classic small floating bead for AquaBead filters. \u003cb\u003eAlphaBioONE\u003c\/b\u003e is the open-cell, dimpled, air-injected media that made the AlphaONE the best-seller — it distributes debris through the whole bed. \u003cb\u003eAlphaNANO\u003c\/b\u003e is BioGems-sized but molded like AlphaBioONE, giving over 600 sq ft of surface per cubic foot. Media floats and is loaded through the lid; check your tank's rated volume before topping up.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eBioGems\u003c\/h3\u003e\n\u003cp\u003eSmall floating bead, high surface area, long service life — the AquaBead standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eAlphaBioONE\u003c\/h3\u003e\n\u003cp\u003eOpen cell, dimpled, air-injected so it never clogs on backwash.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eAlphaNANO\u003c\/h3\u003e\n\u003cp\u003e600+ sq ft per cu ft; polishing-filter clarity with AlphaONE flow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eConverting?\u003c\/h3\u003e\n\u003cp\u003eAquaBead → AlphaONE retro kits (new bottom spray bar + media) are quoted per size — ask us.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMedia\u003c\/th\u003e\n\u003cth\u003e0.25 cu ft\u003c\/th\u003e\n\u003cth\u003e0.5 cu ft\u003c\/th\u003e\n\u003cth\u003e0.75 cu ft\u003c\/th\u003e\n\u003cth\u003e1 cu ft\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBioGems (AquaBead)\u003c\/td\u003e\n\u003ctd\u003e$40.95\u003c\/td\u003e\n\u003ctd\u003e$75.95\u003c\/td\u003e\n\u003ctd\u003e$105.95\u003c\/td\u003e\n\u003ctd\u003e$132.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlphaBioONE (AlphaONE)\u003c\/td\u003e\n\u003ctd\u003e$40.95\u003c\/td\u003e\n\u003ctd\u003e$75.95\u003c\/td\u003e\n\u003ctd\u003e$105.95\u003c\/td\u003e\n\u003ctd\u003e$132.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlphaNANO\u003c\/td\u003e\n\u003ctd\u003e$40.95\u003c\/td\u003e\n\u003ctd\u003e$75.95\u003c\/td\u003e\n\u003ctd\u003e$105.95\u003c\/td\u003e\n\u003ctd\u003e$132.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/alphabio2-sinking-media\"\u003eAlphaBio2 sinking media (PoliGlassBead)\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-pressure-filters\"\u003ePressure filters\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"BioGems (AquaBead) \/ 0.25 cu ft","offer_id":47994738081941,"sku":"BGMEDIA.25","price":40.95,"currency_code":"USD","in_stock":true},{"title":"BioGems (AquaBead) \/ 0.5 cu ft","offer_id":47994738114709,"sku":"BGMEDIA.5","price":75.95,"currency_code":"USD","in_stock":true},{"title":"BioGems (AquaBead) \/ 0.75 cu ft","offer_id":47994738147477,"sku":"BGMEDIA.75","price":105.95,"currency_code":"USD","in_stock":true},{"title":"BioGems (AquaBead) \/ 1 cu ft","offer_id":46097789386901,"sku":"BGMEDIA1","price":132.95,"currency_code":"USD","in_stock":true},{"title":"AlphaBioONE (AlphaONE) \/ 0.25 cu ft","offer_id":47994738180245,"sku":"AOMEDIA.25","price":40.95,"currency_code":"USD","in_stock":true},{"title":"AlphaBioONE (AlphaONE) \/ 0.5 cu ft","offer_id":47994738213013,"sku":"AOMEDIA.5","price":75.95,"currency_code":"USD","in_stock":true},{"title":"AlphaBioONE (AlphaONE) \/ 0.75 cu ft","offer_id":47994738245781,"sku":"AOMEDIA.75","price":105.95,"currency_code":"USD","in_stock":true},{"title":"AlphaBioONE (AlphaONE) \/ 1 cu ft","offer_id":47994738278549,"sku":"AOMEDIA1","price":132.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 0.25 cu ft","offer_id":47994738311317,"sku":"ANMEDIA.25","price":40.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 0.5 cu ft","offer_id":47994738344085,"sku":"ANMEDIA.5","price":75.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 0.75 cu ft","offer_id":47994738376853,"sku":"ANMEDIA.75","price":105.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 1 cu 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class=\"eyebrow\"\u003eGC Tek valves \u0026amp; sight glass · 2\" and 3\" PVC\u003c\/p\u003e\n\u003ch2\u003eBalance, isolate, and never lose prime\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eUse a 3-way on the suction side to balance bottom drain against skimmer, or on the pressure side to split flow between filter and UV. Two-way valves isolate a line for service. The unionized clear swing check keeps the pump from losing prime — a must for any pump above water level. The 2\" sight glass with female slip ends makes backwashing a no-guess job.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-way valve — 2\"\/2.5\"\u003c\/td\u003e\n\u003ctd\u003e$69.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3-way valve — 2\"\/2.5\"\u003c\/td\u003e\n\u003ctd\u003e$79.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-way valve — 2.5\"\/3\"\u003c\/td\u003e\n\u003ctd\u003e$109.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3-way valve — 2.5\"\/3\"\u003c\/td\u003e\n\u003ctd\u003e$134.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwing check valve, clear w\/ unions — 2\"\u003c\/td\u003e\n\u003ctd\u003e$59.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwing check valve, clear w\/ unions — 3\"\u003c\/td\u003e\n\u003ctd\u003e$134.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSight glass — 2\"\u003c\/td\u003e\n\u003ctd\u003e$59.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\u003ca href=\"\/products\/gc-tek-unions-sweeps-gauges\"\u003eUnions, sweeps \u0026amp; gauges\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"2-way valve — 2\"\/2.5\"","offer_id":47994744930453,"sku":"2WV-2","price":69.95,"currency_code":"USD","in_stock":true},{"title":"3-way valve — 2\"\/2.5\"","offer_id":46376297660565,"sku":"3WV-2","price":79.95,"currency_code":"USD","in_stock":true},{"title":"2-way valve — 2.5\"\/3\"","offer_id":47994744963221,"sku":"2WV-3","price":109.95,"currency_code":"USD","in_stock":true},{"title":"3-way valve — 2.5\"\/3\"","offer_id":47994744995989,"sku":"3WV-3","price":134.95,"currency_code":"USD","in_stock":true},{"title":"Swing check valve, clear w\/ unions — 2\"","offer_id":47994745028757,"sku":"SC-2","price":59.95,"currency_code":"USD","in_stock":true},{"title":"Swing check valve, clear w\/ unions — 3\"","offer_id":47994745061525,"sku":"SC-3","price":134.95,"currency_code":"USD","in_stock":true},{"title":"Sight glass — 2\"","offer_id":47994745094293,"sku":"SG-2","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/c58_1745304769.webp?v=1789423233"},{"product_id":"zap-pro-lamp-zprl","title":"GC Tek ZapPRO UV Replacement Parts","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct 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.brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek ZapPRO · genuine replacement parts\u003c\/p\u003e\n\u003ch2\u003eKeep the ZapPRO at full output\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eThe ZapPRO runs two 58 W HO lamps; order two lamps for a full relamp. Quartz tube, ballast and union halves also available. Ships from Upland, CA.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp — 58 W HO\u003c\/td\u003e\n\u003ctd\u003e$161.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuartz tube\u003c\/td\u003e\n\u003ctd\u003e$94.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBallast\u003c\/td\u003e\n\u003ctd\u003e$174.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnion half (nut\/connector\/o-ring)\u003c\/td\u003e\n\u003ctd\u003e$24.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/zap-pro-116-ho-ultraviolet-light\"\u003eZapPRO UV unit\u003c\/a\u003e\u003ca href=\"\/products\/zapp-pure-ultraviolet-light-replacement-parts\"\u003eZapp Pure parts\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Lamp — 58 W HO","offer_id":46778161823893,"sku":"ZPRL","price":161.95,"currency_code":"USD","in_stock":true},{"title":"Quartz tube","offer_id":47994740834453,"sku":"ZPQT","price":94.95,"currency_code":"USD","in_stock":true},{"title":"Ballast","offer_id":47994740867221,"sku":"ZPRBT","price":174.95,"currency_code":"USD","in_stock":true},{"title":"Union half (nut\/connector\/o-ring)","offer_id":47994740899989,"sku":"ZPRU","price":24.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/1583611598zapprowshad_1745304875.webp?v=1789423135"},{"product_id":"multiport-valve-with-spring-check-valve","title":"GC Tek Multiport Valve \u0026 Repair Kit","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid 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12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek multiport valve · 2\" · with spring check for the agitator\u003c\/p\u003e\n\u003ch2\u003eThe highest-flow multiport on the market, ready to drop in\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eSix positions — Filter, Backwash, Rinse, Waste, Recirculate, Closed — all 2\" union openings, large cleanable sight glass, and the spring check set up for the media agitator. Order the current-style (2010 and later tanks) or the old-style (pre-2010) valve. The repair kit includes a new top assembly and spider gasket if the body is fine and only the internals are tired.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMultiport valve w\/ spring check — current filters (2010+)\u003c\/td\u003e\n\u003ctd\u003e$419.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMultiport valve w\/ spring check — old style (pre-2010)\u003c\/td\u003e\n\u003ctd\u003e$419.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMultiport repair kit (top assembly + spider gasket)\u003c\/td\u003e\n\u003ctd\u003e$259.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-spider-gasket\"\u003eSpider gasket only\u003c\/a\u003e\u003ca href=\"\/products\/blower-spring-check-valve\"\u003eSpring check valves\u003c\/a\u003e\u003ca href=\"\/products\/alphaone-key-handle-assembly\"\u003eMultiport key handle\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Multiport valve w\/ spring check — current filters (2010+)","offer_id":47348913701013,"sku":"MPWC-2","price":419.95,"currency_code":"USD","in_stock":true},{"title":"Multiport valve w\/ spring check — old style (pre-2010)","offer_id":47994740342933,"sku":"MPTR-2","price":419.95,"currency_code":"USD","in_stock":true},{"title":"Multiport repair kit (top assembly + spider gasket)","offer_id":47994740375701,"sku":"MVR","price":259.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/c201_1745304775.jpg?v=1778616743"},{"product_id":"gc-tek-x2-pressure-filter","title":"GC Tek X2 Pressure Filter (formerly Medusa)","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek X2 · formerly the Medusa · 6.0 and 10.0 cu ft\u003c\/p\u003e\n\u003ch2\u003eTwo pumps, one filter, no restriction\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eThe X2 doubles everything — two inlets, two outlets, doubled internals — so two energy-efficient pumps can feed one tank. Filter a 20,000–30,000 gallon pond on a total of about 5 amps. GC Tek redesigned the popular Medusa with the same low-restriction internals as the regular AlphaONE and AquaBead, gave it two sizes and several valve options, and renamed it.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eEverything doubled\u003c\/h3\u003e\n\u003cp\u003eTwo 2\" inlets, two 2\" outlets. Neither pump path ever narrows below 2\", so you get the flow of two filters for well under the price of two.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eBottom drain + skimmer\u003c\/h3\u003e\n\u003cp\u003eRun one pump off the bottom drain and one off the skimmer, each on its own circuit, and balance them independently.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eStandard, LH or Classic\u003c\/h3\u003e\n\u003cp\u003eStandard uses one multiport plus a set of 2\"\/2.5\" two-way valves; LH bypasses the multiport for the lowest restriction of any X2; Classic keeps a full multiport on each side.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eSame GC Tek hardware\u003c\/h3\u003e\n\u003cp\u003eOmnifuser internals, 2 HP media agitator, ALISS valve, clear lid, fiberglass tank with limited lifetime warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eModels\u003c\/h3\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eMedia\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003eFish load\u003c\/th\u003e\n\u003cth\u003eTank\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e6.0\u003c\/td\u003e\n\u003ctd\u003eAlphaONE \/ AquaBead \/ AlphaNANO\u003c\/td\u003e\n\u003ctd\u003e20,000 gal\u003c\/td\u003e\n\u003ctd\u003e300 lb\u003c\/td\u003e\n\u003ctd\u003e6.0 cu ft · 30\" dia\u003c\/td\u003e\n\u003ctd\u003e$3,837.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10.0\u003c\/td\u003e\n\u003ctd\u003eAlphaONE \/ AquaBead \/ AlphaNANO\u003c\/td\u003e\n\u003ctd\u003e30,000 gal\u003c\/td\u003e\n\u003ctd\u003e500 lb\u003c\/td\u003e\n\u003ctd\u003e10.0 cu ft · 36\" dia\u003c\/td\u003e\n\u003ctd\u003e$4,549.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6.0 LH\u003c\/td\u003e\n\u003ctd\u003eAlphaONE \/ AquaBead \/ AlphaNANO\u003c\/td\u003e\n\u003ctd\u003e20,000 gal\u003c\/td\u003e\n\u003ctd\u003e300 lb\u003c\/td\u003e\n\u003ctd\u003e6.0 cu ft · 30\" dia\u003c\/td\u003e\n\u003ctd\u003e$3,839.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10.0 LH\u003c\/td\u003e\n\u003ctd\u003eAlphaONE \/ AquaBead \/ AlphaNANO\u003c\/td\u003e\n\u003ctd\u003e30,000 gal\u003c\/td\u003e\n\u003ctd\u003e500 lb\u003c\/td\u003e\n\u003ctd\u003e10.0 cu ft · 36\" dia\u003c\/td\u003e\n\u003ctd\u003e$4,429.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10.0 Classic (dual multiport)\u003c\/td\u003e\n\u003ctd\u003eAlphaONE \/ AquaBead \/ AlphaNANO\u003c\/td\u003e\n\u003ctd\u003e30,000 gal\u003c\/td\u003e\n\u003ctd\u003e500 lb\u003c\/td\u003e\n\u003ctd\u003e10.0 cu ft · 36\" dia\u003c\/td\u003e\n\u003ctd\u003e$4,699.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003eWant it pre-plumbed?\u003c\/b\u003e The WattMizer PLUS PRO X2 system pairs this filter with two 3\/4 HP Artesian2 pumps, dual AquaSieve2 prefilters and two NishikigoiUV-HD160 amalgam UVs on all-weather pads.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-wattmizer-plus-pro-system\"\u003eWattMizer PLUS PRO systems\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-pressure-filters\"\u003eSingle-inlet filters\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"AlphaONE \/ 6.0","offer_id":47994744209557,"sku":"AOX26.0","price":3837.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 10.0","offer_id":47994744242325,"sku":"AOX210.0","price":4549.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 6.0 LH","offer_id":47994744275093,"sku":"AOX26.0LH","price":3839.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 10.0 LH","offer_id":47994744307861,"sku":"AOX210.0LH","price":4429.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 10.0 Classic (dual multiport)","offer_id":47994744340629,"sku":"AOX210.0C","price":4699.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 6.0","offer_id":47994744373397,"sku":"ABX26.0","price":3837.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 10.0","offer_id":47994744406165,"sku":"ABX210.0","price":4549.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 6.0 LH","offer_id":47994744438933,"sku":"ABX26.0LH","price":3839.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 10.0 LH","offer_id":47994744471701,"sku":"ABX210.0LH","price":4429.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 10.0 Classic (dual multiport)","offer_id":47994744504469,"sku":"ABX210.0C","price":4699.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 6.0","offer_id":47994744537237,"sku":"ANX26.0","price":3837.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 10.0","offer_id":47994744570005,"sku":"ANX210.0","price":4549.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 6.0 LH","offer_id":47994744602773,"sku":"ANX26.0LH","price":3839.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 10.0 LH","offer_id":47994744635541,"sku":"ANX210.0LH","price":4429.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 10.0 Classic (dual multiport)","offer_id":47994744668309,"sku":"ANX210.0C","price":4699.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/e56d19c5-9ddd-4e25-9229-d80ecd669127_1786159676.png?v=1789423208"},{"product_id":"gc-tek-multicyclone-50-prefilter","title":"GC Tek MultiCyclone 50 Centrifugal Prefilter","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek MultiCyclone 50 · centrifugal solids separator · after the pump\u003c\/p\u003e\n\u003ch2\u003eThe prefilter that works better the faster you flow\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eMost prefilters separate better at slow flow. Not this one — the MultiCyclone uses centrifugal separation, so the faster the water spins the better the cyclone works. It catches up to 80% of the solids before they reach the bead filter, has no media to clean, and purges with just 3–4 gallons of water. Minimum 13 gpm, maximum 132 gpm. 24\" × 11.5\", 2\" connections.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eUp to 80% of solids\u003c\/h3\u003e\n\u003cp\u003eCaught before the filter, so backwash intervals stretch out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eNo media\u003c\/h3\u003e\n\u003cp\u003eNothing to replace — open the purge valve, done.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e3–4 gallon purge\u003c\/h3\u003e\n\u003cp\u003eBarely dents your water level.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e13–132 gpm\u003c\/h3\u003e\n\u003cp\u003eSized for one pump on a 2\" system; plumb after the pump.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eFlow range\u003c\/th\u003e\n\u003cth\u003ePorts\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003eMultiCyclone 50\u003c\/td\u003e\n\u003ctd\u003e13–132 gpm\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e24\" × 11.5\"\u003c\/td\u003e\n\u003ctd\u003e$499.95\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/aqua-sieve-2-pond-strainer\"\u003eAquaSieve (before the pump)\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Default Title","offer_id":47994744733845,"sku":"MC50","price":499.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/c13_1745304703.webp?v=1789423214"},{"product_id":"gc-tek-aquasieve2-replacement-parts","title":"GC Tek AquaSieve2 Replacement Parts","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek AquaSieve2 · replacement parts\u003c\/p\u003e\n\u003ch2\u003eHousing, lid, bleeder valve and basket for the AquaSieve2\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eGenuine GC Tek parts for the 2\" AquaSieve2 solids separator. The basket is the usual wear item; the lid and bleeder valve take the sun for years but are here when you need them.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom housing\u003c\/td\u003e\n\u003ctd\u003e$379.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLid\u003c\/td\u003e\n\u003ctd\u003e$124.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop bleeder valve\u003c\/td\u003e\n\u003ctd\u003e$13.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplacement basket\u003c\/td\u003e\n\u003ctd\u003e$124.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\u003ca href=\"\/products\/aqua-sieve-2-pond-strainer\"\u003eAquaSieve units\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Bottom housing","offer_id":47994745389205,"sku":"ASHA1","price":379.95,"currency_code":"USD","in_stock":true},{"title":"Lid","offer_id":47994745421973,"sku":"ASHA2TOP1","price":124.95,"currency_code":"USD","in_stock":true},{"title":"Top bleeder valve","offer_id":47994745454741,"sku":"ASHABLVLV1","price":13.95,"currency_code":"USD","in_stock":true},{"title":"Replacement basket","offer_id":47994745487509,"sku":"ASHABAS1","price":124.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/c72_1745304779.webp?v=1789423251"},{"product_id":"gc-tek-thermakoi-zappheat-heater","title":"GC Tek ThermaKoi ZappHeat Inline Pond Heater","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. We'll confirm the ship date and any oversize shipping with you before it goes out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek ThermaKoi ZappHeat · inline electric heaters · 316 stainless · digital LED readout\u003c\/p\u003e\n\u003ch2\u003eHeat the pond, not the shed\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eHeavy 316 stainless inline heaters with a flow switch standard for safety and an electronic thermostat with digital readout for precise control. Plumb in one 2\" union and out the other — flow in, flow out, that's the install. The classic tool for the KHV heat protocol, for holding quarantine tanks at temperature, and for keeping a heated show pond feeding through winter. New black cabinet styling across the line; all models now have the digital LED readout.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003e316 stainless\u003c\/h3\u003e\n\u003cp\u003eMarine-grade element housing for pond water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eFlow switch standard\u003c\/h3\u003e\n\u003cp\u003eWon't fire without flow — protects the element and your plumbing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eDigital thermostat\u003c\/h3\u003e\n\u003cp\u003eSet it and hold it; LED readout on every model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e2\" unions\u003c\/h3\u003e\n\u003cp\u003eSame connections as the rest of your GC Tek system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003cth\u003eGuide (well-insulated)\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eZH-1\u003c\/td\u003e\n\u003ctd\u003e1.5 kW\u003c\/td\u003e\n\u003ctd\u003e115 V\u003c\/td\u003e\n\u003ctd\u003e~1,500 gal\u003c\/td\u003e\n\u003ctd\u003e$1,469.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZH-6\u003c\/td\u003e\n\u003ctd\u003e5.5 kW\u003c\/td\u003e\n\u003ctd\u003e230 V\u003c\/td\u003e\n\u003ctd\u003e~6,000 gal\u003c\/td\u003e\n\u003ctd\u003e$1,599.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZH-11\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003ctd\u003e230 V\u003c\/td\u003e\n\u003ctd\u003e~11,000 gal\u003c\/td\u003e\n\u003ctd\u003e$1,979.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZH-18\u003c\/td\u003e\n\u003ctd\u003e18 kW\u003c\/td\u003e\n\u003ctd\u003e230 V\u003c\/td\u003e\n\u003ctd\u003e~18,000 gal\u003c\/td\u003e\n\u003ctd\u003e$2,354.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note warn\"\u003e\n\u003cb\u003eSizing is climate-dependent.\u003c\/b\u003e The gallon guide assumes a covered or well-insulated pond holding a modest rise over ambient. Southern California winters are kind; a 5.5 kW unit will hold a covered 5,000-gal koi pond comfortably. Call us with your pond volume, cover situation and target temperature and we'll size it. 230 V models need a dedicated circuit — plan for an electrician.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs there extra shipping?\u003c\/summary\u003e\u003cp\u003eThis item is oversize for standard UPS rates. We'll confirm the exact shipping before it goes out.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"ZH-1 — 1.5 kW, 115 V (up to ~1,500 gal)","offer_id":47994755580053,"sku":"ZH-1","price":1469.95,"currency_code":"USD","in_stock":true},{"title":"ZH-6 — 5.5 kW, 230 V (up to ~6,000 gal)","offer_id":47994755612821,"sku":"ZH-6","price":1599.95,"currency_code":"USD","in_stock":true},{"title":"ZH-11 — 11 kW, 230 V (up to ~11,000 gal)","offer_id":47994755645589,"sku":"ZH-11","price":1979.95,"currency_code":"USD","in_stock":true},{"title":"ZH-18 — 18 kW, 230 V (up to ~18,000 gal)","offer_id":47994755678357,"sku":"ZH-18","price":2354.95,"currency_code":"USD","in_stock":true}]},{"product_id":"gc-tek-unions-sweeps-gauges","title":"GC Tek Unions, Sweeps \u0026 Gauges","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto 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th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek unions, sweeps \u0026amp; pressure gauges\u003c\/p\u003e\n\u003ch2\u003eThe small parts that make a clean install\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eSchedule 80 unions are the heavy, robust ones GC Tek ships on the NishikigoiUV and specs on serious plumbing runs — every intake line needs one for proper filter and pump operation. Schedule 40 sweeps instead of hard 90s greatly reduce head loss. Male-thread x slip unions let you run 2\" pipe on pumps with 1.5\" or 2\" threaded ports. The standard gauge is the true-reading unit fitted to every GC Tek filter; the liquid-filled gauge is for really accurate readings.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule 80 union — 2\" slip x slip\u003c\/td\u003e\n\u003ctd\u003e$19.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule 80 union — 3\" slip x slip\u003c\/td\u003e\n\u003ctd\u003e$48.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule 80 union — 4\" slip x slip\u003c\/td\u003e\n\u003ctd\u003e$89.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\" slip x 2\" slip union\u003c\/td\u003e\n\u003ctd\u003e$19.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.5\" male thread x 2\" slip union\u003c\/td\u003e\n\u003ctd\u003e$24.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\" male thread x 2\" slip union\u003c\/td\u003e\n\u003ctd\u003e$25.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\" Sch 40 sweep elbow\u003c\/td\u003e\n\u003ctd\u003e$12.85\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplacement pressure gauge\u003c\/td\u003e\n\u003ctd\u003e$32.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLiquid-filled pressure gauge\u003c\/td\u003e\n\u003ctd\u003e$49.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/3-way-valve-2-2-5-3wv-2\"\u003eValves \u0026amp; sight glass\u003c\/a\u003e\u003ca href=\"\/products\/blower-spring-check-valve\"\u003eSpring check valves\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-nishikigoi-flow-meter\"\u003eFlow meter\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Schedule 80 union — 2\" slip x slip","offer_id":48002881847445,"sku":"SCH80-2","price":19.95,"currency_code":"USD","in_stock":true},{"title":"Schedule 80 union — 3\" slip x slip","offer_id":48002881880213,"sku":"SCH80-3","price":48.95,"currency_code":"USD","in_stock":true},{"title":"Schedule 80 union — 4\" slip x slip","offer_id":48002881912981,"sku":"SCH80-4","price":89.95,"currency_code":"USD","in_stock":true},{"title":"2\" slip x 2\" slip union","offer_id":47994758594709,"sku":"UNFF2\/2","price":19.95,"currency_code":"USD","in_stock":true},{"title":"1.5\" male thread x 2\" slip union","offer_id":47994758627477,"sku":"UNM1.5\/2","price":24.95,"currency_code":"USD","in_stock":true},{"title":"2\" male thread x 2\" slip union","offer_id":47994758660245,"sku":"UNM2\/2","price":25.95,"currency_code":"USD","in_stock":true},{"title":"2\" Sch 40 sweep elbow","offer_id":47994758693013,"sku":"SW2","price":12.85,"currency_code":"USD","in_stock":true},{"title":"Replacement pressure gauge","offer_id":47994758725781,"sku":"GAU","price":32.75,"currency_code":"USD","in_stock":true},{"title":"Liquid-filled pressure gauge","offer_id":47994758758549,"sku":"GAU2","price":49.95,"currency_code":"USD","in_stock":true}]},{"product_id":"gc-tek-wundermax-variable-speed-pump","title":"GC Tek WunderMax Variable Speed Pump","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira 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solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek WunderMax \u0026amp; WunderMax2 · variable speed external pumps · built for ponds\u003c\/p\u003e\n\u003ch2\u003eFinally, a variable-speed pump sized for a pond\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eMost ponds don't need a 0–3 HP pool-style variable-speed pump. The WunderMax is 0–1.65 HP on 115 V — plug it in, no electrician — with a true 3\" pump body (2\" bushings included) and a giant basket. The WunderMax2 is the 2\" version with the same idea. Dial the flow to exactly what the pond and filter want, and pay only for the water you actually move. 0–3 HP \/ 0–2.7 HP 230 V versions for the big systems.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eDial-a-flow\u003c\/h3\u003e\n\u003cp\u003eRun 35 gpm at 0.6 A overnight, 91 gpm at full tilt when you're backwashing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e115 V plug-in\u003c\/h3\u003e\n\u003cp\u003eThe 0–1.65 HP models need no electrician.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eGiant basket\u003c\/h3\u003e\n\u003cp\u003eFewer basket cleanings; pair with an AquaSieve and forget it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eTrue 3\" or 2\"\u003c\/h3\u003e\n\u003cp\u003eWunderMax = 3\" ports (with 2\" bushings); WunderMax2 = 2\" ports.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRange\u003c\/th\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003cth\u003ePorts\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWunderMax 0–1.65 HP\u003c\/td\u003e\n\u003ctd\u003e0-1.65 HP\u003c\/td\u003e\n\u003ctd\u003e115 V\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e$1,995.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWunderMax 0–3 HP\u003c\/td\u003e\n\u003ctd\u003e0-3 HP\u003c\/td\u003e\n\u003ctd\u003e230 V\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e$2,595.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWunderMax2 0–1.65 HP\u003c\/td\u003e\n\u003ctd\u003e0-1.65 HP\u003c\/td\u003e\n\u003ctd\u003e115 V\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$1,895.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWunderMax2 0–2.7 HP\u003c\/td\u003e\n\u003ctd\u003e0-2.7 HP\u003c\/td\u003e\n\u003ctd\u003e230 V\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$2,395.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003eWunderMax 0–1.65 HP curve (115 V):\u003c\/b\u003e 0.6 A \/ 1,350 rpm \/ 35 gpm · 1.4 A \/ 1,850 rpm \/ 50 gpm · 2.5 A \/ 2,350 rpm \/ 63 gpm · 4.3 A \/ 2,850 rpm \/ 76 gpm · 7.4 A \/ 3,450 rpm \/ 91 gpm · max head 55 ft.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/collections\/pumps\"\u003ePerformance Pro Artesian pumps\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"WunderMax 0–1.65 HP, 115 V, 3\" ports","offer_id":47994765312149,"sku":"WM1.65","price":1995.0,"currency_code":"USD","in_stock":true},{"title":"WunderMax 0–3 HP, 230 V, 3\" ports","offer_id":47994765344917,"sku":"WM3","price":2595.0,"currency_code":"USD","in_stock":true},{"title":"WunderMax2 0–1.65 HP, 115 V, 2\" ports","offer_id":47994765377685,"sku":"WUN2-1.65","price":1895.0,"currency_code":"USD","in_stock":true},{"title":"WunderMax2 0–2.7 HP, 230 V, 2\" ports","offer_id":47994765410453,"sku":"WUN2-2.7","price":2395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/1582153255wundermax15-variable-speed-shad_1745304859.webp?v=1789423354"},{"product_id":"gc-tek-filter-tank-parts","title":"GC Tek Filter Tank Parts — Sludge Drains \u0026 Top Caps","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid 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12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek tank parts · sludge drain valves \u0026amp; pre-2010 top caps\u003c\/p\u003e\n\u003ch2\u003eKeep an older GC Tek tank in service\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eSludge drain valves (3\/4\" for 1.75–4.25, 1.5\" for 6.0, 9.0 and Medusa) and the black top-cap assemblies with pressure relief valve, o-ring and wrench for pre-2010 tanks. Replacement tanks with internals and AquaBead→AlphaONE conversion kits are quoted per size — call the shop.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\/4\" sludge drain valve — 1.75\/2.5\/4.25 filters\u003c\/td\u003e\n\u003ctd\u003e$38.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.5\" sludge drain valve — 6.0\/9.0\/Medusa filters\u003c\/td\u003e\n\u003ctd\u003e$79.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop cap w\/ relief valve — pre-2010 1.75\/2.5\/4.25\u003c\/td\u003e\n\u003ctd\u003e$179.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop cap w\/ relief valve — pre-2010 6.0\/9.0\/Medusa\u003c\/td\u003e\n\u003ctd\u003e$209.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear top bleeder valve — pre-2010 tanks\u003c\/td\u003e\n\u003ctd\u003e$109.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\u003ca href=\"\/products\/alphaone-clear-lid\"\u003eClear lids (2010+ tanks)\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"3\/4\" sludge drain valve — 1.75\/2.5\/4.25 filters","offer_id":47994765869205,"sku":".75SLDGDRVAL","price":38.95,"currency_code":"USD","in_stock":true},{"title":"1.5\" sludge drain valve — 6.0\/9.0\/Medusa filters","offer_id":47994765901973,"sku":"1.5SLDGDRVAL","price":79.95,"currency_code":"USD","in_stock":true},{"title":"Top cap w\/ relief valve — pre-2010 1.75\/2.5\/4.25","offer_id":47994765934741,"sku":"ABCAP1","price":179.95,"currency_code":"USD","in_stock":true},{"title":"Top cap w\/ relief valve — pre-2010 6.0\/9.0\/Medusa","offer_id":47994765967509,"sku":"ABCAP2","price":209.95,"currency_code":"USD","in_stock":true},{"title":"Clear top bleeder valve — pre-2010 tanks","offer_id":47994766000277,"sku":"ABTRCLRBLR2","price":109.95,"currency_code":"USD","in_stock":true}]},{"product_id":"gc-tek-koiexerciser-eductor-tree","title":"GC Tek KoiExerciser Eductor Tree","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px 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0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek KoiExerciser · 4-gang eductor tree\u003c\/p\u003e\n\u003ch2\u003eTurn the pond into a river\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eCarp are river fish. Koi that never swim against current lose their shape and grow big bellies — and body shape is the first thing a judge looks at. The KoiExerciser eductor tree takes the flow from a pump and multiplies it: each eductor entrains 4–5 times the water actually pumped through it, so a modest pump produces a strong directional current. Put it on a timer for a session or two a day and the koi will line up to swim against it. This is the 4-gang eductor tree only; add your own 1 HP pump and timer, or ask us about the complete kit.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003e4–5× flow\u003c\/h3\u003e\n\u003cp\u003eEach eductor nozzle multiplies pumped flow by entraining surrounding water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eBody shape\u003c\/h3\u003e\n\u003cp\u003eRegular exercise keeps show koi in the shape judges reward.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eTimer friendly\u003c\/h3\u003e\n\u003cp\u003eOnce or twice a day is plenty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eTree only\u003c\/h3\u003e\n\u003cp\u003ePump, timer and complete kits quoted on request.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003eKoiExerciser eductor tree, 4-gang\u003c\/td\u003e\n\u003ctd\u003e$524.95\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/collections\/pumps\"\u003ePumps\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Default Title","offer_id":47994774749333,"sku":"KETO","price":524.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/1582403464koiexerciserpic_1745304864.webp?v=1789423390"},{"product_id":"gc-tek-wattmizer-plus-system","title":"GC Tek WattMizer PLUS System","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid 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solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek WattMizer PLUS · complete system · 1.75 to 10.0 · with or without AquaSieve2\u003c\/p\u003e\n\u003ch2\u003eFiltration was never easier. Installs in minutes, not days.\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eThe PLUS system has been GC Tek's workhorse package for over 25 years: your choice of AlphaONE, AquaBead or AlphaNANO filter, an energy-efficient Artesian2 pump and a NishikigoiUV-HD160 amalgam UV, mounted and plumbed on all-weather pads with a union at every connection. Add the AquaSieve2 prefilter and the pump basket becomes something you clean every few weeks instead of every day.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003ePre-plumbed at the factory\u003c\/h3\u003e\n\u003cp\u003eGC Tek physically assembles every system, marks every union, then breaks it down into boxes. You set the pads, hand-tighten the numbered unions and connect pond in\/out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eArtesian2 pumps\u003c\/h3\u003e\n\u003cp\u003ePerformance Pro external pumps custom-specced for GC Tek — quiet, energy-efficient, 3-year warranty, plenty of power for a proper backwash.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e316 stainless NishikigoiUV\u003c\/h3\u003e\n\u003cp\u003eMarine-grade 316 (not 304) stainless amalgam UV with individual ballasts, lamp indicators and an hour meter. 13,000-hour lamps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eYour filter, your media\u003c\/h3\u003e\n\u003cp\u003eChoose AlphaONE, AquaBead or AlphaNANO media in the filter. Same price either way.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eChoose your size \u0026amp; prefilter\u003c\/h3\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003eFish load\u003c\/th\u003e\n\u003cth\u003ePump\u003c\/th\u003e\n\u003cth\u003eUV\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.75 — up to 2,500 gal · None\u003c\/td\u003e\n\u003ctd\u003e2,500 gal\u003c\/td\u003e\n\u003ctd\u003e90 lb\u003c\/td\u003e\n\u003ctd\u003e1\/4 HP Artesian2 (320 W)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$4,999.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.75 — up to 2,500 gal · AquaSieve2 prefilter\u003c\/td\u003e\n\u003ctd\u003e2,500 gal\u003c\/td\u003e\n\u003ctd\u003e90 lb\u003c\/td\u003e\n\u003ctd\u003e1\/4 HP Artesian2 (320 W)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$5,524.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.50 — up to 5,000 gal · None\u003c\/td\u003e\n\u003ctd\u003e5,000 gal\u003c\/td\u003e\n\u003ctd\u003e125 lb\u003c\/td\u003e\n\u003ctd\u003e1\/3 HP Artesian2 (440 W)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$5,642.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.50 — up to 5,000 gal · AquaSieve2 prefilter\u003c\/td\u003e\n\u003ctd\u003e5,000 gal\u003c\/td\u003e\n\u003ctd\u003e125 lb\u003c\/td\u003e\n\u003ctd\u003e1\/3 HP Artesian2 (440 W)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$6,164.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4.25 — up to 10,000 gal · None\u003c\/td\u003e\n\u003ctd\u003e10,000 gal\u003c\/td\u003e\n\u003ctd\u003e225 lb\u003c\/td\u003e\n\u003ctd\u003e1\/2 HP Artesian2 (630 W)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$5,744.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4.25 — up to 10,000 gal · AquaSieve2 prefilter\u003c\/td\u003e\n\u003ctd\u003e10,000 gal\u003c\/td\u003e\n\u003ctd\u003e225 lb\u003c\/td\u003e\n\u003ctd\u003e1\/2 HP Artesian2 (630 W)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$6,269.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6.0 — up to 17,000 gal · None\u003c\/td\u003e\n\u003ctd\u003e17,000 gal\u003c\/td\u003e\n\u003ctd\u003e300 lb\u003c\/td\u003e\n\u003ctd\u003e3\/4 HP Artesian2 HF (9.6 A)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$6,199.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6.0 — up to 17,000 gal · AquaSieve2 prefilter\u003c\/td\u003e\n\u003ctd\u003e17,000 gal\u003c\/td\u003e\n\u003ctd\u003e300 lb\u003c\/td\u003e\n\u003ctd\u003e3\/4 HP Artesian2 HF (9.6 A)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$6,724.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10.0 — up to 25,000 gal · None\u003c\/td\u003e\n\u003ctd\u003e25,000 gal\u003c\/td\u003e\n\u003ctd\u003e500 lb\u003c\/td\u003e\n\u003ctd\u003e1 HP Artesian2 HF (12.8 A)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$7,179.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10.0 — up to 25,000 gal · AquaSieve2 prefilter\u003c\/td\u003e\n\u003ctd\u003e25,000 gal\u003c\/td\u003e\n\u003ctd\u003e500 lb\u003c\/td\u003e\n\u003ctd\u003e1 HP Artesian2 HF (12.8 A)\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$7,699.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003ePads:\u003c\/b\u003e 1.75–4.25 ship on one pad; 6.0 and 10.0 on two pads totalling 48\" × 72\". Options at time of order: variable-speed pump, MultiCyclone prefilter, larger NishikigoiUV, ElekTrik control center, TheLiberator auto-backwash, bypass plumbing — call us to spec it.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-wattmizer-plus-pro-system\"\u003ePLUS PRO (dual prefilters, 3-port valve)\u003c\/a\u003e\u003ca href=\"\/products\/koikeeper-pond-filteration-system\"\u003eKoiKeeper (simpler, cheaper)\u003c\/a\u003e\u003ca href=\"\/products\/the-liberator-auto-back-wash-cleaning-system\"\u003eTheLiberator auto-backwash\u003c\/a\u003e\u003ca href=\"\/collections\/gc-tek-systems\"\u003eAll GC Tek systems\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"AlphaONE \/ 1.75 — up to 2,500 gal \/ None","offer_id":47994936361109,"sku":"WPS1.75-AO","price":4999.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 1.75 — up to 2,500 gal \/ AquaSieve2 prefilter","offer_id":47994936393877,"sku":"WPS1.75AS2-AO","price":5524.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 2.50 — up to 5,000 gal \/ None","offer_id":47994936426645,"sku":"WPS2.50-AO","price":5642.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 2.50 — up to 5,000 gal \/ AquaSieve2 prefilter","offer_id":47994936459413,"sku":"WPS2.50AS2-AO","price":6164.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 4.25 — up to 10,000 gal \/ None","offer_id":47994936492181,"sku":"WPS4.25-AO","price":5744.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 4.25 — up to 10,000 gal \/ AquaSieve2 prefilter","offer_id":47994936524949,"sku":"WPS4.25AS2-AO","price":6269.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 6.0 — up to 17,000 gal \/ None","offer_id":47994936557717,"sku":"WPS6.0-AO","price":6199.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 6.0 — up to 17,000 gal \/ AquaSieve2 prefilter","offer_id":47994936590485,"sku":"WPS6.0AS2-AO","price":6724.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 10.0 — up to 25,000 gal \/ None","offer_id":47994936623253,"sku":"WPS10.0-AO","price":7179.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 10.0 — up to 25,000 gal \/ AquaSieve2 prefilter","offer_id":47994936656021,"sku":"WPS10.0AS2-AO","price":7699.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 1.75 — up to 2,500 gal \/ None","offer_id":47994936688789,"sku":"WPS1.75-AB","price":4999.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 1.75 — up to 2,500 gal \/ AquaSieve2 prefilter","offer_id":47994936721557,"sku":"WPS1.75AS2-AB","price":5524.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 2.50 — up to 5,000 gal \/ None","offer_id":47994936754325,"sku":"WPS2.50-AB","price":5642.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 2.50 — up to 5,000 gal \/ AquaSieve2 prefilter","offer_id":47994936787093,"sku":"WPS2.50AS2-AB","price":6164.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 4.25 — up to 10,000 gal \/ None","offer_id":47994936819861,"sku":"WPS4.25-AB","price":5744.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 4.25 — up to 10,000 gal \/ AquaSieve2 prefilter","offer_id":47994936852629,"sku":"WPS4.25AS2-AB","price":6269.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 6.0 — up to 17,000 gal \/ None","offer_id":47994936885397,"sku":"WPS6.0-AB","price":6199.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 6.0 — up to 17,000 gal \/ AquaSieve2 prefilter","offer_id":47994936918165,"sku":"WPS6.0AS2-AB","price":6724.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 10.0 — up to 25,000 gal \/ None","offer_id":47994936950933,"sku":"WPS10.0-AB","price":7179.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 10.0 — up to 25,000 gal \/ AquaSieve2 prefilter","offer_id":47994936983701,"sku":"WPS10.0AS2-AB","price":7699.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 1.75 — up to 2,500 gal \/ None","offer_id":47994937016469,"sku":"WPS1.75-AN","price":4999.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 1.75 — up to 2,500 gal \/ AquaSieve2 prefilter","offer_id":47994937049237,"sku":"WPS1.75AS2-AN","price":5524.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 2.50 — up to 5,000 gal \/ None","offer_id":47994937082005,"sku":"WPS2.50-AN","price":5642.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 2.50 — up to 5,000 gal \/ AquaSieve2 prefilter","offer_id":47994937114773,"sku":"WPS2.50AS2-AN","price":6164.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 4.25 — up to 10,000 gal \/ None","offer_id":47994937147541,"sku":"WPS4.25-AN","price":5744.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 4.25 — up to 10,000 gal \/ AquaSieve2 prefilter","offer_id":47994937180309,"sku":"WPS4.25AS2-AN","price":6269.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 6.0 — up to 17,000 gal \/ None","offer_id":47994937213077,"sku":"WPS6.0-AN","price":6199.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 6.0 — up to 17,000 gal \/ AquaSieve2 prefilter","offer_id":47994937245845,"sku":"WPS6.0AS2-AN","price":6724.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 10.0 — up to 25,000 gal \/ None","offer_id":47994937278613,"sku":"WPS10.0-AN","price":7179.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 10.0 — up to 25,000 gal \/ AquaSieve2 prefilter","offer_id":47994937311381,"sku":"WPS10.0AS2-AN","price":7699.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/img-0582_1785012027.webp?v=1789423747"},{"product_id":"gc-tek-wattmizer-plus-pro-system","title":"GC Tek WattMizer PLUS PRO System","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 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.brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek WattMizer PLUS PRO · complete system · dual AquaSieve2 · 1.75 to X2 10.0\u003c\/p\u003e\n\u003ch2\u003eThe easiest system on the market to live with\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eAbout five minutes a week: empty the two AquaSieve2 baskets and backwash. One prefilter takes the bottom drain, the other takes the skimmer, and a 3-port valve lets you balance them by turning a handle. From there water runs through the Artesian2 pump, your AlphaONE \/ AquaBead \/ AlphaNANO filter and the NishikigoiUV-HD160 amalgam UV back to the pond. Everything is plumbed on 48\" × 72\" all-weather pads, unions at every joint, numbered for a one-person setup.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eDual AquaSieve2 prefilters\u003c\/h3\u003e\n\u003cp\u003eBottom drain and skimmer each get their own solids separator; a 3-port valve balances the two.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003ePre-plumbed at the factory\u003c\/h3\u003e\n\u003cp\u003eGC Tek physically assembles every system, marks every union, then breaks it down into boxes. You set the pads, hand-tighten the numbered unions and connect pond in\/out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e316 stainless NishikigoiUV\u003c\/h3\u003e\n\u003cp\u003eMarine-grade 316 (not 304) stainless amalgam UV with individual ballasts, lamp indicators and an hour meter. 13,000-hour lamps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eX2 for 30,000 gal\u003c\/h3\u003e\n\u003cp\u003eThe PLUS PRO X2 runs two 3\/4 HP Artesian2 pumps and two HD160 UVs on one X2 10.0 filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eChoose your size\u003c\/h3\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003eFish load\u003c\/th\u003e\n\u003cth\u003ePump\u003c\/th\u003e\n\u003cth\u003eUV\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.75 — up to 2,500 gal\u003c\/td\u003e\n\u003ctd\u003e2,500 gal\u003c\/td\u003e\n\u003ctd\u003e90 lb\u003c\/td\u003e\n\u003ctd\u003e1\/2 HP custom low-amp Artesian2\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$6,241.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.50 — up to 5,000 gal\u003c\/td\u003e\n\u003ctd\u003e5,000 gal\u003c\/td\u003e\n\u003ctd\u003e125 lb\u003c\/td\u003e\n\u003ctd\u003e1\/2 HP custom low-amp Artesian2\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$6,839.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4.25 — up to 10,000 gal\u003c\/td\u003e\n\u003ctd\u003e10,000 gal\u003c\/td\u003e\n\u003ctd\u003e225 lb\u003c\/td\u003e\n\u003ctd\u003e1\/2 HP Artesian2 HF\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$6,952.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6.0 — up to 17,000 gal\u003c\/td\u003e\n\u003ctd\u003e17,000 gal\u003c\/td\u003e\n\u003ctd\u003e300 lb\u003c\/td\u003e\n\u003ctd\u003e3\/4 HP Artesian2\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$7,312.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10.0 — up to 25,000 gal\u003c\/td\u003e\n\u003ctd\u003e25,000 gal\u003c\/td\u003e\n\u003ctd\u003e500 lb\u003c\/td\u003e\n\u003ctd\u003e1 HP Artesian2\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$8,319.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eX2 10.0 — up to 30,000 gal\u003c\/td\u003e\n\u003ctd\u003e30,000 gal\u003c\/td\u003e\n\u003ctd\u003e500 lb\u003c\/td\u003e\n\u003ctd\u003e2 x 3\/4 HP Artesian2 + 2 UVs\u003c\/td\u003e\n\u003ctd\u003eNishikigoiUV-HD160 Amalgam\u003c\/td\u003e\n\u003ctd\u003e$11,143.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003eMake it hands-off:\u003c\/b\u003e add TheLiberator auto-backwash at time of order and the only routine job left is dumping the baskets. Add a BioMotion BioVerter for the ultimate soluble-waste treatment. Variable-speed pumps, MultiCyclone, larger UVs and the ElekTrik control center are all available — ask us.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-wattmizer-plus-system\"\u003eWattMizer PLUS\u003c\/a\u003e\u003ca href=\"\/products\/the-liberator-auto-back-wash-cleaning-system\"\u003eTheLiberator\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-x2-pressure-filter\"\u003eX2 filter alone\u003c\/a\u003e\u003ca href=\"\/collections\/gc-tek-systems\"\u003eAll GC Tek systems\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"AlphaONE \/ 1.75 — up to 2,500 gal","offer_id":47995084112021,"sku":"WPP1.75-AO","price":6241.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 2.50 — up to 5,000 gal","offer_id":47995084144789,"sku":"WPP2.50-AO","price":6839.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 4.25 — up to 10,000 gal","offer_id":47995084177557,"sku":"WPP4.25-AO","price":6952.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 6.0 — up to 17,000 gal","offer_id":47995084210325,"sku":"WPP6.0-AO","price":7312.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 10.0 — up to 25,000 gal","offer_id":47995084243093,"sku":"WPP10.0-AO","price":8319.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ X2 10.0 — up to 30,000 gal","offer_id":47995084275861,"sku":"WPPX2-AO","price":11143.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 1.75 — up to 2,500 gal","offer_id":47995084308629,"sku":"WPP1.75-AB","price":6241.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 2.50 — up to 5,000 gal","offer_id":47995084341397,"sku":"WPP2.50-AB","price":6839.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 4.25 — up to 10,000 gal","offer_id":47995084374165,"sku":"WPP4.25-AB","price":6952.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 6.0 — up to 17,000 gal","offer_id":47995084406933,"sku":"WPP6.0-AB","price":7312.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 10.0 — up to 25,000 gal","offer_id":47995084439701,"sku":"WPP10.0-AB","price":8319.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ X2 10.0 — up to 30,000 gal","offer_id":47995084472469,"sku":"WPPX2-AB","price":11143.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 1.75 — up to 2,500 gal","offer_id":47995084505237,"sku":"WPP1.75-AN","price":6241.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 2.50 — up to 5,000 gal","offer_id":47995084538005,"sku":"WPP2.50-AN","price":6839.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 4.25 — up to 10,000 gal","offer_id":47995084570773,"sku":"WPP4.25-AN","price":6952.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 6.0 — up to 17,000 gal","offer_id":47995084603541,"sku":"WPP6.0-AN","price":7312.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 10.0 — up to 25,000 gal","offer_id":47995084636309,"sku":"WPP10.0-AN","price":8319.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ X2 10.0 — up to 30,000 gal","offer_id":47995084669077,"sku":"WPPX2-AN","price":11143.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/img-0596_1785205476.webp?v=1789423846"},{"product_id":"gc-tek-nishikigoiuv-horizontal","title":"GC Tek NishikigoiUV Horizontal Amalgam UV — 316 Stainless","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 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var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek NishikigoiUV · horizontal · marine-grade 316 stainless · very-high-output amalgam\u003c\/p\u003e\n\u003ch2\u003eDesigned to be the last UV you'll ever need\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eMarine-grade 316 stainless (not 304) vessel, 316 stainless electrical control box, one to six high-output amalgam lamps, and an individual electronic ballast for every lamp — so if one goes down the rest keep the pond clear. Built-in lamp indicator lights and a resettable LED hour meter tell you exactly where your 13,000-hour lamps stand (9,000 is the industry norm). Priced against the plastic units it replaces, with a lifetime warranty on the vessel.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003eNew for 2026.\u003c\/b\u003e GC Tek's Nishikigoi line — designed in Chandler, Oklahoma, built to the standard koi keepers expect from the AlphaONE. First shipments started June 2026; better model-by-model photos are on the way from GC Tek.\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003e316 marine-grade SS\u003c\/h3\u003e\n\u003cp\u003eVessel and control box both 316 stainless — the good kind. Lifetime vessel warranty (rubber parts excepted).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eOne ballast per lamp\u003c\/h3\u003e\n\u003cp\u003eLonger ballast life, and a single failure never darkens the whole unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eHour meter + indicators\u003c\/h3\u003e\n\u003cp\u003eResettable LED hour meter plus a light per lamp so you can see every lamp is firing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e13,000-hour amalgam lamps\u003c\/h3\u003e\n\u003cp\u003e2–5× the output of standard UV lamps, with quartz sleeves and lamps accessible from both ends. Sch 80 unions and a big-handle drain included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eChoose your model\u003c\/h3\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eLamps\u003c\/th\u003e\n\u003cth\u003eMax flow\u003c\/th\u003e\n\u003cth\u003eGuide pond size\u003c\/th\u003e\n\u003cth\u003eUnions\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eH80\u003c\/td\u003e\n\u003ctd\u003e1 × 80 W\u003c\/td\u003e\n\u003ctd\u003e4,800 gph\u003c\/td\u003e\n\u003ctd\u003e~5,000 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$749.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH110\u003c\/td\u003e\n\u003ctd\u003e2 × 55 W\u003c\/td\u003e\n\u003ctd\u003e6,600 gph\u003c\/td\u003e\n\u003ctd\u003e~6,600 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$1,280.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHD160\u003c\/td\u003e\n\u003ctd\u003e2 × 80 W\u003c\/td\u003e\n\u003ctd\u003e9,600 gph\u003c\/td\u003e\n\u003ctd\u003e~7,500 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$1,499.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH165\u003c\/td\u003e\n\u003ctd\u003e3 × 55 W\u003c\/td\u003e\n\u003ctd\u003e9,900 gph\u003c\/td\u003e\n\u003ctd\u003e~10,000 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$2,280.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH220\u003c\/td\u003e\n\u003ctd\u003e4 × 55 W\u003c\/td\u003e\n\u003ctd\u003e13,200 gph\u003c\/td\u003e\n\u003ctd\u003e~15,000 gal\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e$2,595.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH400\u003c\/td\u003e\n\u003ctd\u003e5 × 80 W\u003c\/td\u003e\n\u003ctd\u003e24,000 gph\u003c\/td\u003e\n\u003ctd\u003e~25,000 gal\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e$3,495.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH480\u003c\/td\u003e\n\u003ctd\u003e6 × 80 W\u003c\/td\u003e\n\u003ctd\u003e28,800 gph\u003c\/td\u003e\n\u003ctd\u003e~35,000 gal\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e$5,279.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note warn\"\u003e\n\u003cb\u003eSize by flow, not just gallons.\u003c\/b\u003e A UV only sterilizes water that passes it slowly enough — match the unit's max gph to your pump, then check the pond guide. For stocked koi ponds we like ~20 W per 1,000 gal and about one turnover per hour; water gardens get by on ~10 W per 1,000 gal. The H80 is now standard on KoiKeeper and PondKeeper systems; the HD160 on PLUS and PLUS PRO. H-series units are in stock at GC Tek and ship promptly.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-nishikigoiuv-vertical\"\u003eVertical NishikigoiUV\u003c\/a\u003e\u003ca href=\"\/products\/zapp-pure-ultraviolet-clarifier\"\u003eZapp Pure single-lamp UV\u003c\/a\u003e\u003ca href=\"\/collections\/gc-tek-systems\"\u003eWattMizer systems\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"H80 — 1 × 80 W · up to 4,800 gph","offer_id":47996436381845,"sku":"NUV-H80","price":749.95,"currency_code":"USD","in_stock":true},{"title":"H110 — 2 × 55 W · up to 6,600 gph","offer_id":47996436414613,"sku":"NUV-H110","price":1280.0,"currency_code":"USD","in_stock":true},{"title":"HD160 — 160 W · up to 9,600 gph","offer_id":47996436447381,"sku":"NUV-HD160","price":1499.95,"currency_code":"USD","in_stock":true},{"title":"H165 — 3 × 55 W · up to 9,900 gph","offer_id":47996436480149,"sku":"NUV-H165","price":2280.0,"currency_code":"USD","in_stock":true},{"title":"H220 — 4 × 55 W · up to 13,200 gph · 3\"","offer_id":47996436512917,"sku":"NUV-H220","price":2595.0,"currency_code":"USD","in_stock":true},{"title":"H400 — 5 × 80 W · up to 24,000 gph · 3\"","offer_id":47996436545685,"sku":"NUV-H400","price":3495.0,"currency_code":"USD","in_stock":true},{"title":"H480 — 6 × 80 W · up to 28,800 gph · 3\"","offer_id":47996436578453,"sku":"NUV-H480","price":5279.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/nishikigoiuv-h400wshad_1780862471.webp?v=1789447818"},{"product_id":"gc-tek-nishikigoiuv-vertical","title":"GC Tek NishikigoiUV Vertical Amalgam UV — 316 Stainless","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek NishikigoiUV · vertical · marine-grade 316 stainless · amalgam\u003c\/p\u003e\n\u003ch2\u003eThe same UV, standing up\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eEverything the horizontal NishikigoiUV offers — 316 stainless vessel, high-output amalgam lamps, individual ballasts, hour meter and lamp indicators, 13,000-hour lamps — in a vertical footprint for tight filter pits and pads. The V80 carries an integrated all-weather ballast; the VB80, V160, V240 and V320 come with a detachable 316 stainless weather-proof control box. Sch 80 unions on every unit. Lifetime warranty on the vessel.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003eNew for 2026.\u003c\/b\u003e GC Tek's Nishikigoi line — designed in Chandler, Oklahoma, built to the standard koi keepers expect from the AlphaONE. First shipments started June 2026; better model-by-model photos are on the way from GC Tek.\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eVertical footprint\u003c\/h3\u003e\n\u003cp\u003eStands beside the filter instead of lying across the pad.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eDetachable SS control box\u003c\/h3\u003e\n\u003cp\u003eMount the box where it's dry and easy to read (VB80 and up).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eIndividual ballasts\u003c\/h3\u003e\n\u003cp\u003eOne electronic ballast per lamp for maximum ballast life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eLifetime vessel warranty\u003c\/h3\u003e\n\u003cp\u003e316 stainless — except freezing, or being run over by a bus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eLamps\u003c\/th\u003e\n\u003cth\u003eMax flow\u003c\/th\u003e\n\u003cth\u003eGuide pond size\u003c\/th\u003e\n\u003cth\u003eUnions\u003c\/th\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eV80\u003c\/td\u003e\n\u003ctd\u003e1 × 80 W\u003c\/td\u003e\n\u003ctd\u003e4,800 gph\u003c\/td\u003e\n\u003ctd\u003e~5,000 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003eintegrated all-weather ballast\u003c\/td\u003e\n\u003ctd\u003e$834.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVB80\u003c\/td\u003e\n\u003ctd\u003e1 × 80 W\u003c\/td\u003e\n\u003ctd\u003e4,800 gph\u003c\/td\u003e\n\u003ctd\u003e~5,000 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003edetachable 316 SS control box\u003c\/td\u003e\n\u003ctd\u003e$1,679.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eV160\u003c\/td\u003e\n\u003ctd\u003e2 × 80 W\u003c\/td\u003e\n\u003ctd\u003e9,600 gph\u003c\/td\u003e\n\u003ctd\u003e~10,000 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003edetachable 316 SS control box\u003c\/td\u003e\n\u003ctd\u003e$2,639.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eV240\u003c\/td\u003e\n\u003ctd\u003e3 × 80 W\u003c\/td\u003e\n\u003ctd\u003e14,400 gph\u003c\/td\u003e\n\u003ctd\u003e~15,000 gal\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003edetachable 316 SS control box\u003c\/td\u003e\n\u003ctd\u003e$3,239.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eV320\u003c\/td\u003e\n\u003ctd\u003e4 × 80 W\u003c\/td\u003e\n\u003ctd\u003e19,200 gph\u003c\/td\u003e\n\u003ctd\u003e~22,500 gal\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003edetachable 316 SS control box\u003c\/td\u003e\n\u003ctd\u003e$3,479.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003eV400 (24,000 gph) and V480 (28,800 gph) vertical units are coming later in 2026 — call us if you need one.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-nishikigoiuv-horizontal\"\u003eHorizontal NishikigoiUV\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"V80 — 80 W · up to 4,800 gph · all-weather ballast","offer_id":47996436971669,"sku":"NUV-V80","price":834.95,"currency_code":"USD","in_stock":true},{"title":"VB80 — 80 W · up to 4,800 gph · detachable SS control box","offer_id":47996437004437,"sku":"NUV-VB80","price":1679.95,"currency_code":"USD","in_stock":true},{"title":"V160 — 2 × 80 W · up to 9,600 gph","offer_id":47996437037205,"sku":"NUV-V160","price":2639.95,"currency_code":"USD","in_stock":true},{"title":"V240 — 3 × 80 W · up to 14,400 gph · 3\"","offer_id":47996437069973,"sku":"NUV-V240","price":3239.95,"currency_code":"USD","in_stock":true},{"title":"V320 — 4 × 80 W · up to 19,200 gph · 3\"","offer_id":47996437102741,"sku":"NUV-V320","price":3479.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/ce38f405-0a1a-4b25-ab9a-6b50eb6c2675_1787015775.webp?v=1789447883"},{"product_id":"gc-tek-nishikigoi-rdf-drum-filter","title":"GC Tek NishikigoiRDF Rotating Drum Filter","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek NishikigoiRDF · rotating drum filter · polypropylene or 316 stainless · 2,500 to 100,000 gal\u003c\/p\u003e\n\u003ch2\u003eMechanical filtration that cleans itself — for every size pond imaginable\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eA rotating drum filter pulls solids out of the water on a 75-micron 316 stainless mesh before they ever reach your biological filter, then rinses the screen automatically the moment the water level drops — no baskets, no backwash, no bead bed to clog. GC Tek's NishikigoiRDF comes in ten sizes and two bodies: heavy-duty polypropylene, or full 316 stainless. Multiple inlets and outlets in oversized pipe, a 40 W drum motor and 120 W wash pump, and the price-to-flow ratio you expect from GC Tek.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003eNew for 2026.\u003c\/b\u003e GC Tek's Nishikigoi line — designed in Chandler, Oklahoma, built to the standard koi keepers expect from the AlphaONE. First shipments started June 2026; better model-by-model photos are on the way from GC Tek.\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003e75-micron 316 SS screen\u003c\/h3\u003e\n\u003cp\u003eFine enough to strip feed fines and string algae, tough enough for decades.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eAutomatic backwash\u003c\/h3\u003e\n\u003cp\u003eFloat switch senses the drop across the screen, the drum rotates and the spray bar rinses it to waste. About 3–4 gallons per cycle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eGravity or pumped\u003c\/h3\u003e\n\u003cp\u003ePlumb it gravity-fed off bottom drains ahead of the pump, or pump-fed. The 30 handles 6,000–8,000 gph gravity \/ 7,950 gph pumped.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003ePairs with AlphaONE\u003c\/h3\u003e\n\u003cp\u003eDrum for solids, AlphaONE \/ AlphaNANO or a Wakimizu shower for biology. This is how GC Tek builds the big ponds now.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eSizes\u003c\/h3\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eMax flow\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003eIn \/ out\u003c\/th\u003e\n\u003cth\u003eFootprint (L × H × W)\u003c\/th\u003e\n\u003cth\u003ePolypropylene\u003c\/th\u003e\n\u003cth\u003e316 Stainless\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRDF 5\u003c\/td\u003e\n\u003ctd\u003e1,350 gph\u003c\/td\u003e\n\u003ctd\u003e2,500 gal\u003c\/td\u003e\n\u003ctd\u003e2 × 1.5\"\u003c\/td\u003e\n\u003ctd\u003e20.5\" L × 20\" H × 17\" W\u003c\/td\u003e\n\u003ctd\u003e$995.00\u003c\/td\u003e\n\u003ctd\u003e$2,680.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRDF 10\u003c\/td\u003e\n\u003ctd\u003e2,650 gph\u003c\/td\u003e\n\u003ctd\u003e5,500 gal\u003c\/td\u003e\n\u003ctd\u003e2 × 2\"\u003c\/td\u003e\n\u003ctd\u003e22\" L × 20\" H × 17\" W\u003c\/td\u003e\n\u003ctd\u003e$1,349.95\u003c\/td\u003e\n\u003ctd\u003e$2,974.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRDF 20\u003c\/td\u003e\n\u003ctd\u003e5,300 gph\u003c\/td\u003e\n\u003ctd\u003e10,500 gal\u003c\/td\u003e\n\u003ctd\u003e2 × 2.5\"\u003c\/td\u003e\n\u003ctd\u003e27.5\" L × 24\" H × 21.5\" W\u003c\/td\u003e\n\u003ctd\u003e$2,269.95\u003c\/td\u003e\n\u003ctd\u003e$3,119.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRDF 30\u003c\/td\u003e\n\u003ctd\u003e7,950 gph\u003c\/td\u003e\n\u003ctd\u003e16,000 gal\u003c\/td\u003e\n\u003ctd\u003e2 × 4\"\u003c\/td\u003e\n\u003ctd\u003e31\" L × 28\" H × 25\" W\u003c\/td\u003e\n\u003ctd\u003e$2,995.00\u003c\/td\u003e\n\u003ctd\u003e$5,295.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRDF 60\u003c\/td\u003e\n\u003ctd\u003e16,000 gph\u003c\/td\u003e\n\u003ctd\u003e32,000 gal\u003c\/td\u003e\n\u003ctd\u003e3 × 4\"\u003c\/td\u003e\n\u003ctd\u003e47\" L × 38\" H × 31\" W\u003c\/td\u003e\n\u003ctd\u003e$4,575.00\u003c\/td\u003e\n\u003ctd\u003e$7,495.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRDF 80\u003c\/td\u003e\n\u003ctd\u003e21,200 gph\u003c\/td\u003e\n\u003ctd\u003e42,000 gal\u003c\/td\u003e\n\u003ctd\u003e4 × 4\"\u003c\/td\u003e\n\u003ctd\u003e50\" L × 41\" H × 24\" W\u003c\/td\u003e\n\u003ctd\u003e$5,899.00\u003c\/td\u003e\n\u003ctd\u003e$9,795.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRDF 100\u003c\/td\u003e\n\u003ctd\u003e26,500 gph\u003c\/td\u003e\n\u003ctd\u003e55,000 gal\u003c\/td\u003e\n\u003ctd\u003especial order\u003c\/td\u003e\n\u003ctd\u003e54\" L × 45\" H × 40\" W\u003c\/td\u003e\n\u003ctd\u003e$7,739.95\u003c\/td\u003e\n\u003ctd\u003e$10,995.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRDF 125\u003c\/td\u003e\n\u003ctd\u003e33,000 gph\u003c\/td\u003e\n\u003ctd\u003e65,000 gal\u003c\/td\u003e\n\u003ctd\u003especial order\u003c\/td\u003e\n\u003ctd\u003e55\" L × 42.5\" H × 42\" W\u003c\/td\u003e\n\u003ctd\u003e$8,199.95\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRDF 150\u003c\/td\u003e\n\u003ctd\u003e40,000 gph\u003c\/td\u003e\n\u003ctd\u003e80,000 gal\u003c\/td\u003e\n\u003ctd\u003especial order\u003c\/td\u003e\n\u003ctd\u003e63\" L × 51\" H × 46\" W\u003c\/td\u003e\n\u003ctd\u003e$10,419.95\u003c\/td\u003e\n\u003ctd\u003e$14,680.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRDF 200\u003c\/td\u003e\n\u003ctd\u003e53,000 gph\u003c\/td\u003e\n\u003ctd\u003e100,000 gal\u003c\/td\u003e\n\u003ctd\u003especial order\u003c\/td\u003e\n\u003ctd\u003e70\" L × 57\" H × 52\" W\u003c\/td\u003e\n\u003ctd\u003e$12,369.95\u003c\/td\u003e\n\u003ctd\u003e$18,600.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note warn\"\u003e\n\u003cb\u003eSizes 100 and up are special order\u003c\/b\u003e (RDF 125 in polypropylene only) — allow extra lead time and we'll confirm freight and offloading before it ships; these are large and heavy. All drums ship LTL freight with freight quoted before shipping.\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eWhat comes with it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDrum, 316 SS mesh, drum motor (40 W) and wash pump (120 W), spray bar, float switch and controller\u003c\/li\u003e\n\u003cli\u003eUnionized inlets\/outlets (2 × 1.5\" on the 5, up to 4 × 4\" on the 80) and a 2.5\" waste line\u003c\/li\u003e\n\u003cli\u003eReady for gravity-fed or pump-fed installation; we'll walk you through the plumbing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-nishikigoi-wakimizu-bakki-shower\"\u003eWakimizu bakki shower (biological stage)\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-pressure-filters\"\u003eAlphaONE \/ AlphaNANO pressure filters\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-nishikigoiuv-horizontal\"\u003eNishikigoiUV\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Polypropylene \/ RDF 5 — up to 2,500 gal","offer_id":47996437397653,"sku":"NGRDF5PP","price":995.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ RDF 5 — up to 2,500 gal","offer_id":47996437430421,"sku":"NGRDF5SS","price":2680.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ RDF 10 — up to 5,500 gal","offer_id":47996437463189,"sku":"NGRDF10PP","price":1349.95,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ RDF 10 — up to 5,500 gal","offer_id":47996437495957,"sku":"NGRDF10SS","price":2974.95,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ RDF 20 — up to 10,500 gal","offer_id":47996437528725,"sku":"NGRDF20PP","price":2269.95,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ RDF 20 — up to 10,500 gal","offer_id":47996437561493,"sku":"NGRDF20SS","price":3119.95,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ RDF 30 — up to 16,000 gal","offer_id":47996437594261,"sku":"NGRDF30PP","price":2995.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ RDF 30 — up to 16,000 gal","offer_id":47996437627029,"sku":"NGRDF30SS","price":5295.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ RDF 60 — up to 32,000 gal","offer_id":47996437659797,"sku":"NGRDF60PP","price":4575.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ RDF 60 — up to 32,000 gal","offer_id":47996437692565,"sku":"NGRDF60SS","price":7495.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ RDF 80 — up to 42,000 gal","offer_id":47996437725333,"sku":"NGRDF80PP","price":5899.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ RDF 80 — up to 42,000 gal","offer_id":47996437758101,"sku":"NGRDF80SS","price":9795.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ RDF 100 — up to 55,000 gal","offer_id":47996437790869,"sku":"NGRDF100PP","price":7739.95,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ RDF 100 — up to 55,000 gal","offer_id":47996437823637,"sku":"NGRDF100SS","price":10995.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ RDF 125 — up to 65,000 gal","offer_id":47996437856405,"sku":"NGRDF125PP","price":8199.95,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ RDF 150 — up to 80,000 gal","offer_id":47996437889173,"sku":"NGRDF150PP","price":10419.95,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ RDF 150 — up to 80,000 gal","offer_id":47996437921941,"sku":"NGRDF150SS","price":14680.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ RDF 200 — up to 100,000 gal","offer_id":47996437954709,"sku":"NGRDF200PP","price":12369.95,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ RDF 200 — up to 100,000 gal","offer_id":47996437987477,"sku":"NGRDF200SS","price":18600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/ngrdf30ss-leftprofile_1783289409.webp?v=1789448010"},{"product_id":"gc-tek-nishikigoi-wakimizu-bakki-shower","title":"GC Tek Nishikigoi Wakimizu Bakki Shower","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek Nishikigoi Wakimizu 湧き水 · “koi spring water” · bakki shower · polypropylene or 316 stainless\u003c\/p\u003e\n\u003ch2\u003eThe Japanese way to grow big, clean koi — built in Oklahoma\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eA bakki shower trickles water over tiers of media in open air: massive gas exchange, super-oxygenated biology, and a natural stripping of the nitrogen and dissolved organics that pressure filters can't touch. It's how the Niigata breeders keep their mud-pond water. The Wakimizu has a top drip tray with overflow for even distribution, a media support on the bottom tier so flow stays even across every opening, and multiple inlet\/outlet unions on the back top tier to hide the pipework. Choose a waterfall outlet or plumbed pipe-fitting outlets, in polypropylene or 316 stainless.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003eNew for 2026.\u003c\/b\u003e GC Tek's Nishikigoi line — designed in Chandler, Oklahoma, built to the standard koi keepers expect from the AlphaONE. First shipments started June 2026; better model-by-model photos are on the way from GC Tek.\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eDrip tray with overflow\u003c\/h3\u003e\n\u003cp\u003eWater spreads evenly across the whole media bed instead of channeling down one side.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eElevated bottom tier\u003c\/h3\u003e\n\u003cp\u003eMedia sits above the outlets so the last tier flows as evenly as the first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eHidden plumbing\u003c\/h3\u003e\n\u003cp\u003eMultiple inlet\/outlet unions on the back of the top tier. 60 and 80 are 3\"; 15–40 are 2\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eMedia sold separately\u003c\/h3\u003e\n\u003cp\u003eRun Wakimizu media or NishikigoiSpiralHouse media — sized by the box below.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eSizes\u003c\/h3\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003cth\u003eFlow\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003eInlets\u003c\/th\u003e\n\u003cth\u003ePolypropylene\u003c\/th\u003e\n\u003cth\u003e316 Stainless\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e370 mm \/ 15\"\u003c\/td\u003e\n\u003ctd\u003e2,600 gph\u003c\/td\u003e\n\u003ctd\u003e2,500 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$920.00\u003c\/td\u003e\n\u003ctd\u003e$1,260.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e540 mm \/ 21\"\u003c\/td\u003e\n\u003ctd\u003e3,950 gph\u003c\/td\u003e\n\u003ctd\u003e4,000 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$1,080.00\u003c\/td\u003e\n\u003ctd\u003e$1,895.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1000 mm \/ 40\"\u003c\/td\u003e\n\u003ctd\u003e8,000 gph\u003c\/td\u003e\n\u003ctd\u003e8,000 gal\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e$1,400.00\u003c\/td\u003e\n\u003ctd\u003e$3,600.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1500 mm \/ 60\"\u003c\/td\u003e\n\u003ctd\u003e13,000 gph\u003c\/td\u003e\n\u003ctd\u003e15,000 gal\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e$1,800.00\u003c\/td\u003e\n\u003ctd\u003e$5,600.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2000 mm \/ 80\"\u003c\/td\u003e\n\u003ctd\u003e18,500 gph\u003c\/td\u003e\n\u003ctd\u003e20,000 gal\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e$2,200.00\u003c\/td\u003e\n\u003ctd\u003e$6,995.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003eWaterfall or pipe fitting?\u003c\/b\u003e Waterfall lets the bottom tier spill straight back into the pond (maximum aeration, and it sounds great). Pipe fitting gives you plumbed outlets so the shower can sit away from the pond edge or feed another filter. Same price either way. Pair with a NishikigoiRDF drum ahead of it so the shower media stays clean.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-wakimizu-shower-media\"\u003eShower media (Wakimizu \/ SpiralHouse)\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-nishikigoi-rdf-drum-filter\"\u003eNishikigoiRDF drum filter\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Polypropylene \/ 15\" — up to 2,500 gal \/ Waterfall","offer_id":47996438741141,"sku":"NGBS15P-WF","price":920.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ 15\" — up to 2,500 gal \/ Pipe fitting","offer_id":47996438773909,"sku":"NGBS15P-PF","price":920.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ 15\" — up to 2,500 gal \/ Waterfall","offer_id":47996438806677,"sku":"NGBS15S-WF","price":1260.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ 15\" — up to 2,500 gal \/ Pipe fitting","offer_id":47996438839445,"sku":"NGBS15S-PF","price":1260.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ 22\" — up to 4,000 gal \/ Waterfall","offer_id":47996438872213,"sku":"NGBS22P-WF","price":1080.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ 22\" — up to 4,000 gal \/ Pipe fitting","offer_id":47996438904981,"sku":"NGBS22P-PF","price":1080.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ 22\" — up to 4,000 gal \/ Waterfall","offer_id":47996438937749,"sku":"NGBS22S-WF","price":1895.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ 22\" — up to 4,000 gal \/ Pipe fitting","offer_id":47996438970517,"sku":"NGBS22S-PF","price":1895.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ 40\" — up to 8,000 gal \/ Waterfall","offer_id":47996439003285,"sku":"NGBS40P-WF","price":1400.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ 40\" — up to 8,000 gal \/ Pipe fitting","offer_id":47996439036053,"sku":"NGBS40P-PF","price":1400.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ 40\" — up to 8,000 gal \/ Waterfall","offer_id":47996439068821,"sku":"NGBS40S-WF","price":3600.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ 40\" — up to 8,000 gal \/ Pipe fitting","offer_id":47996439101589,"sku":"NGBS40S-PF","price":3600.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ 60\" — up to 15,000 gal \/ Waterfall","offer_id":47996439134357,"sku":"NGBS60P-WF","price":1800.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ 60\" — up to 15,000 gal \/ Pipe fitting","offer_id":47996439167125,"sku":"NGBS60P-PF","price":1800.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ 60\" — up to 15,000 gal \/ Waterfall","offer_id":47996439199893,"sku":"NGBS60S-WF","price":5600.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ 60\" — up to 15,000 gal \/ Pipe fitting","offer_id":47996439232661,"sku":"NGBS60S-PF","price":5600.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ 80\" — up to 20,000 gal \/ Waterfall","offer_id":47996439265429,"sku":"NGBS80P-WF","price":2200.0,"currency_code":"USD","in_stock":true},{"title":"Polypropylene \/ 80\" — up to 20,000 gal \/ Pipe fitting","offer_id":47996439298197,"sku":"NGBS80P-PF","price":2200.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ 80\" — up to 20,000 gal \/ Waterfall","offer_id":47996439330965,"sku":"NGBS80S-WF","price":6995.0,"currency_code":"USD","in_stock":true},{"title":"316 Stainless Steel \/ 80\" — up to 20,000 gal \/ Pipe fitting","offer_id":47996439363733,"sku":"NGBS80S-PF","price":6995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/a8a558e8-ff31-4c4a-9dd0-ec060ebe1014_1786759367.webp?v=1789448132"},{"product_id":"gc-tek-wakimizu-shower-media","title":"GC Tek Nishikigoi Shower Media — Wakimizu \u0026 SpiralHouse","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid 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var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek Nishikigoi shower media · by the box\u003c\/p\u003e\n\u003ch2\u003eFeed the shower\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eTwo media for the Wakimizu (or any bakki shower). \u003cb\u003eWakimizu media\u003c\/b\u003e — 100 pieces per box — is the standard high-surface-area shower media. \u003cb\u003eNishikigoiSpiralHouse\u003c\/b\u003e — 30 larger pieces per box — is the premium spiral-house style with more open structure for heavier flows. How many boxes? Call us with your shower size and we'll tell you exactly.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMedia\u003c\/th\u003e\n\u003cth\u003eBox\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWakimizu media\u003c\/td\u003e\n\u003ctd\u003e100-piece box\u003c\/td\u003e\n\u003ctd\u003e$158.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNishikigoiSpiralHouse media\u003c\/td\u003e\n\u003ctd\u003e30-piece box\u003c\/td\u003e\n\u003ctd\u003e$225.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-nishikigoi-wakimizu-bakki-shower\"\u003eWakimizu bakki shower\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Wakimizu media — 100-piece box","offer_id":47996439691413,"sku":"NGWMEDIA100","price":158.95,"currency_code":"USD","in_stock":true},{"title":"NishikigoiSpiralHouse media — 30-piece box","offer_id":47996439724181,"sku":"NGSHMEDIA30","price":225.0,"currency_code":"USD","in_stock":true}]},{"product_id":"gc-tek-nishikigoiair-air-pump","title":"GC Tek NishikigoiAIR Premium Air Pump","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira 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solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek NishikigoiAIR · premium air pumps · aluminum casing\u003c\/p\u003e\n\u003ch2\u003eQuiet, durable, high-output air\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eAluminum-cased diaphragm air pumps from GC Tek's Nishikigoi line: high output, quiet running, built to sit outside by the filter pit for years. Four sizes from 30 to 160 liters per minute. Run air stones and rings, drive an ALISS life-support valve on an AlphaONE, or aerate the media in a Wakimizu shower.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cb\u003eNew for 2026.\u003c\/b\u003e GC Tek's Nishikigoi line — designed in Chandler, Oklahoma, built to the standard koi keepers expect from the AlphaONE. First shipments started June 2026; better model-by-model photos are on the way from GC Tek.\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eAluminum casing\u003c\/h3\u003e\n\u003cp\u003eSheds heat and shrugs off weather.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eQuiet running\u003c\/h3\u003e\n\u003cp\u003eDiaphragm design — no oil, low noise.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eSized for koi ponds\u003c\/h3\u003e\n\u003cp\u003e30 L\/min for a small pond up to 160 L\/min for a big one on multiple diffusers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eWorks with ALISS\u003c\/h3\u003e\n\u003cp\u003eKeep your AlphaONE media alive during a pump failure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eAir output\u003c\/th\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAIR-30\u003c\/td\u003e\n\u003ctd\u003e30 L\/min\u003c\/td\u003e\n\u003ctd\u003e18 W\u003c\/td\u003e\n\u003ctd\u003e$239.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAIR-50\u003c\/td\u003e\n\u003ctd\u003e54 L\/min\u003c\/td\u003e\n\u003ctd\u003e25 W\u003c\/td\u003e\n\u003ctd\u003e$259.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAIR-80\u003c\/td\u003e\n\u003ctd\u003e80 L\/min\u003c\/td\u003e\n\u003ctd\u003e50 W\u003c\/td\u003e\n\u003ctd\u003e$534.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAIR-120\u003c\/td\u003e\n\u003ctd\u003e160 L\/min\u003c\/td\u003e\n\u003ctd\u003e105 W\u003c\/td\u003e\n\u003ctd\u003e$749.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003eRule of thumb: about 1 L\/min per 100 gallons for a lightly stocked pond; double it for heavy koi loads, deep ponds, or if the pump also feeds an ALISS valve.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/collections\/matala\"\u003eAir diffusers \u0026amp; manifolds (Matala)\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"AIR-30 — 30 L\/min · 18 W","offer_id":47996439953557,"sku":"NAIR-30","price":239.95,"currency_code":"USD","in_stock":true},{"title":"AIR-50 — 54 L\/min · 25 W","offer_id":47996439986325,"sku":"NAIR-50","price":259.95,"currency_code":"USD","in_stock":true},{"title":"AIR-80 — 80 L\/min · 50 W","offer_id":47996440019093,"sku":"NAIR-80","price":534.95,"currency_code":"USD","in_stock":true},{"title":"AIR-120 — 160 L\/min · 105 W","offer_id":47996440051861,"sku":"NAIR-120","price":749.95,"currency_code":"USD","in_stock":true}]},{"product_id":"gc-tek-nishikigoi-flow-meter","title":"GC Tek NishikigoiPROducts Paddle-Wheel Flow Meter","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek NishikigoiPROducts · paddle-wheel flow meter · 2\" and 3\"\u003c\/p\u003e\n\u003ch2\u003eStop guessing your turnover rate\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eEvery sizing rule on this site — one turnover per hour, gallons per hour through the UV, gallons per minute into the filter — assumes you know your actual flow. Head loss, a dirty filter and a throttled valve mean the number on the pump box is never the number in the pipe. This paddle-wheel meter reads live \u003cb\u003eGPM or LPM\u003c\/b\u003e and keeps a \u003cb\u003erunning total\u003c\/b\u003e, so you can see exactly what the pond is turning over and watch the flow drop as the filter loads up (a genuinely useful backwash cue). Ships with an extra set of Schedule 40 unions so you can swap them if needed.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eGPM or LPM\u003c\/h3\u003e\n\u003cp\u003eSwitchable live flow readout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eTotal flow\u003c\/h3\u003e\n\u003cp\u003eCumulative volume — handy for tracking water changes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eBackwash indicator\u003c\/h3\u003e\n\u003cp\u003eWatch flow fall as the bed loads; backwash on the number, not the calendar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eSpare unions included\u003c\/h3\u003e\n\u003cp\u003eAn extra set of Sch 40 unions comes in the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\" — slip x slip\u003c\/td\u003e\n\u003ctd\u003e$257.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\" — slip x slip\u003c\/td\u003e\n\u003ctd\u003e$319.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-unions-sweeps-gauges\"\u003eUnions, sweeps \u0026amp; gauges\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-pressure-filters\"\u003ePressure filters\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"2\" — slip x slip","offer_id":48002883879061,"sku":"NGFM2","price":257.95,"currency_code":"USD","in_stock":true},{"title":"3\" — slip x slip","offer_id":48002883911829,"sku":"NGFM3","price":319.95,"currency_code":"USD","in_stock":true}]},{"product_id":"gc-tek-biomotion-bioverter","title":"GC Tek BioMotion BioVerter Fluidized-Bed Filter","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira 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a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek BioMotion BioVerter · fluidized-bed biological filter · 1.5 to 8 cu ft\u003c\/p\u003e\n\u003ch2\u003eAdd biological capacity without adding a pump\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eA fluidized bed is the most efficient biological converter there is — media in constant motion, every surface scrubbed and fed, no dead spots. Most fluidized beds need gravity or a dedicated air supply to move the bed. The BioMotion doesn't: \u003cb\u003ethe flow from your existing filter system fluidizes it\u003c\/b\u003e. The media is barely heavier than water, so it sinks when the flow stops and even a 1\/8 HP pump's output is enough to raise and fluff the bed. Add one to a new GC Tek system at time of order, or drop it into an existing pond to raise biological carrying capacity when your fish load has outgrown the filter.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eNo extra pump or blower\u003c\/h3\u003e\n\u003cp\u003eFluidized by the flow you already have — even 1\/8 HP is enough.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eSelf-cleaning bed\u003c\/h3\u003e\n\u003cp\u003eConstant motion keeps the biofilm young and the surface area open.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eSoluble waste\u003c\/h3\u003e\n\u003cp\u003eTargets the dissolved ammonia and nitrite a mechanical filter can't touch.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eRetrofit friendly\u003c\/h3\u003e\n\u003cp\u003eAdd to a PLUS \/ PLUS PRO at order time, or plumb into an existing system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eMedia\u003c\/th\u003e\n\u003cth\u003eTank (dia x H)\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBioM1.5\u003c\/td\u003e\n\u003ctd\u003e1.5 cu ft\u003c\/td\u003e\n\u003ctd\u003e19\" x 31\"\u003c\/td\u003e\n\u003ctd\u003e$1,644.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBioM2.25\u003c\/td\u003e\n\u003ctd\u003e2.25 cu ft\u003c\/td\u003e\n\u003ctd\u003e21\" x 34.5\"\u003c\/td\u003e\n\u003ctd\u003e$1,879.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBioM3.75\u003c\/td\u003e\n\u003ctd\u003e3.75 cu ft\u003c\/td\u003e\n\u003ctd\u003e24.5\" x 35.5\"\u003c\/td\u003e\n\u003ctd\u003e$2,214.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBioM5.5\u003c\/td\u003e\n\u003ctd\u003e5.5 cu ft\u003c\/td\u003e\n\u003ctd\u003e30.4\" x 40\"\u003c\/td\u003e\n\u003ctd\u003e$2,684.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBioM8.0\u003c\/td\u003e\n\u003ctd\u003e8.0 cu ft\u003c\/td\u003e\n\u003ctd\u003e36.4\" x 45\"\u003c\/td\u003e\n\u003ctd\u003e$3,579.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003eBioMotion media looks like the AlphaONE open-cell media but is \u003cb\u003eblack and sinking\u003c\/b\u003e. Pair a BioMotion with a NishikigoiRDF drum or an AlphaONE and you have mechanical, biological and fluidized-bed conversion in one loop — GC Tek calls it the ultimate waste treatment system for a pond.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-pressure-filters\"\u003ePressure filters\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-nishikigoi-rdf-drum-filter\"\u003eNishikigoiRDF drum filters\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-wattmizer-plus-pro-system\"\u003eWattMizer PLUS PRO systems\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"1.5 cu ft — 19\" x 31\"","offer_id":48002887221397,"sku":"BioM1.5","price":1644.95,"currency_code":"USD","in_stock":true},{"title":"2.25 cu ft — 21\" x 34.5\"","offer_id":48002887254165,"sku":"BioM2.25","price":1879.95,"currency_code":"USD","in_stock":true},{"title":"3.75 cu ft — 24.5\" x 35.5\"","offer_id":48002887286933,"sku":"BioM3.75","price":2214.95,"currency_code":"USD","in_stock":true},{"title":"5.5 cu ft — 30.4\" x 40\"","offer_id":48002887319701,"sku":"BioM5.5","price":2684.95,"currency_code":"USD","in_stock":true},{"title":"8.0 cu ft — 36.4\" x 45\"","offer_id":48002887352469,"sku":"BioM8.0","price":3579.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/biomotion-media_1786324376.webp?v=1789487880"},{"product_id":"gc-tek-elektrik-control-center","title":"GC Tek ElekTrik Pole Control Center","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct .feat{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 26px;align-items:stretch;grid-auto-rows:1fr}.gct .feat\u003e*{margin-top:0!important}.gct .feat div{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--aq);border-radius:12px;padding:16px}.gct .feat h3{font-size:18px;margin:0 0 6px}.gct .feat p{font-size:14px;color:var(--mut);margin:0}\n.gct .sec{margin:0 0 12px;padding-top:6px}.gct .tbl{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px}.gct table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}.gct th{background:#0c1e24;color:var(--aq);text-align:left;padding:10px 12px;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}\n.gct td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}.gct tr:last-child td{border-bottom:0}.gct td:first-child{font-weight:700;color:#fff;white-space:nowrap}\n.gct .note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek ElekTrik Pole Control Center\u003c\/p\u003e\n\u003ch2\u003eOne tidy place to plug in the whole filter pad\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003ePump, UV, agitator, air pump, a light to work by — a filter pad ends up with a tangle of cords and a daisy chain of outdoor strips. The ElekTrik Control Center is GC Tek's answer: a pole-mounted centre with a \u003cb\u003eswitched work light\u003c\/b\u003e, \u003cb\u003esix outlets\u003c\/b\u003e (two of them individually switched, so you can kill the pump or the UV without unplugging anything), and a \u003cb\u003e25 ft heavy-duty cord\u003c\/b\u003e. Designed to be added to any PLUS or PLUS PRO system, and just as useful on a pad you built yourself.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShips from Southern California\u003c\/b\u003eIn-stock parts \u0026amp; media ship from Upland, CA. Local pickup available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eSix outlets\u003c\/h3\u003e\n\u003cp\u003eEnough for pump, UV, agitator, air pump and two spares.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eTwo switched\u003c\/h3\u003e\n\u003cp\u003eKill the pump or UV for maintenance without crawling behind the filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eSwitched work light\u003c\/h3\u003e\n\u003cp\u003eBackwashing after dark stops being a two-hand job.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e25 ft heavy-duty cord\u003c\/h3\u003e\n\u003cp\u003eReach a proper GFCI outlet without a chain of extension cords.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003eElekTrik Pole Control Center\u003c\/td\u003e\n\u003ctd\u003e$614.95\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003eAdd it to any GC Tek system at time of order and it arrives mounted on the pad. \u003cb\u003eHave a licensed electrician handle the supply circuit\u003c\/b\u003e — everything on a pond pad should be on a GFCI.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-wattmizer-plus-system\"\u003eWattMizer PLUS systems\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-wattmizer-plus-pro-system\"\u003eWattMizer PLUS PRO systems\u003c\/a\u003e\u003ca href=\"\/pages\/gctek\"\u003eAll GC Tek\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"Default Title","offer_id":48002888892565,"sku":"ELEKTRIK","price":614.95,"currency_code":"USD","in_stock":true}]},{"product_id":"gc-tek-liberator-pro-system","title":"GC Tek TheLiberator PRO System — PLUS PRO with Automatic Backwash","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);border-radius:18px;padding:28px 26px;line-height:1.55}\n.gct *{box-sizing:border-box}.gct\u003e*{margin-top:0!important}.gct h2,.gct h3{font-family:'Barlow Condensed','Saira Condensed',Inter,sans-serif!important;text-transform:none!important;letter-spacing:.01em;color:#fff!important;line-height:1.1;margin:0}\n.gct h2{font-size:32px;font-weight:700}.gct h3{font-size:20px;font-weight:700}.gct p{margin:0 0 12px;color:var(--ink)}.gct .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--aq);font-weight:700;margin:0 0 8px}\n.gct .lede{font-size:17px;color:var(--mut);max-width:70ch}.gct .bto{display:flex;gap:14px;align-items:flex-start;background:#2a1b0e;border:1px solid #6b3a12;border-left:5px solid var(--or);border-radius:12px;padding:14px 16px;margin:0 0 22px}\n.gct .bto b{color:#ffb070;display:block;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:3px}.gct .bto p{margin:0;color:#f3e5d8;font-size:14px}.gct .bto svg{flex:0 0 26px;margin-top:2px}\n.gct .trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 26px}.gct .trust div{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--mut)}.gct .trust div b{display:block;color:#fff;font-size:14px;margin-bottom:2px}\n.gct 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.note{background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--aq);border-radius:10px;padding:14px 16px;margin:0 0 26px;font-size:14px;color:var(--mut)}.gct .note b{color:#fff}.gct .note.warn{border-left-color:var(--or)}\n.gct .two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 26px}.gct .two\u003e*{margin-top:0!important}.gct .box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}.gct .box h3{margin:0 0 8px}.gct ul{margin:0;padding-left:18px;color:var(--mut);font-size:14px}.gct li{margin:0 0 6px}.gct li b{color:#fff}\n.gct .faq details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek TheLiberator PRO · PLUS PRO system + automatic backwash · 2,500 to 25,000 gal\u003c\/p\u003e\n\u003ch2\u003eThe system that maintains itself\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eTake a WattMizer PLUS PRO — dual AquaSieve2 prefilters on a 3-port balance valve, an Artesian2 pump, your choice of AlphaONE, AquaBead or AlphaNANO filter and a NishikigoiUV-HD160 amalgam UV, all plumbed on all-weather pads — and have GC Tek fit \u003cb\u003eTheLiberator\u003c\/b\u003e automatic backwash valve at the factory. Now the filter cleans itself on a schedule: pump off, agitator on, backwash, rinse, back to filter, pump on. Smartphone controllable. Your entire weekly job becomes emptying two prefilter baskets.\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eBackwash on a schedule\u003c\/h3\u003e\n\u003cp\u003eSix-step cycle runs itself — and from your phone when you want it now.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eDual AquaSieve2 prefilters\u003c\/h3\u003e\n\u003cp\u003eOne on the bottom drain, one on the skimmer, balanced with a 3-port valve.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eLow-restriction valve\u003c\/h3\u003e\n\u003cp\u003eTheLiberator's valve flows like the LH assembly, so automation costs you no head.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eFactory plumbed\u003c\/h3\u003e\n\u003cp\u003eAssembled, marked and test-fitted at GC Tek, then crated for a one-person setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eSizes\u003c\/h3\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003cth\u003ePond up to\u003c\/th\u003e\n\u003cth\u003eFish load\u003c\/th\u003e\n\u003cth\u003eFilter\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLiberator PRO 1.75\u003c\/td\u003e\n\u003ctd\u003e2,500 gal\u003c\/td\u003e\n\u003ctd\u003e90 lb\u003c\/td\u003e\n\u003ctd\u003e1.75 cu ft\u003c\/td\u003e\n\u003ctd\u003e$10,036.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLiberator PRO 2.50\u003c\/td\u003e\n\u003ctd\u003e5,000 gal\u003c\/td\u003e\n\u003ctd\u003e125 lb\u003c\/td\u003e\n\u003ctd\u003e2.50 cu ft\u003c\/td\u003e\n\u003ctd\u003e$10,634.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLiberator PRO 4.25\u003c\/td\u003e\n\u003ctd\u003e10,000 gal\u003c\/td\u003e\n\u003ctd\u003e225 lb\u003c\/td\u003e\n\u003ctd\u003e4.25 cu ft\u003c\/td\u003e\n\u003ctd\u003e$10,747.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLiberator PRO 6.0\u003c\/td\u003e\n\u003ctd\u003e17,000 gal\u003c\/td\u003e\n\u003ctd\u003e300 lb\u003c\/td\u003e\n\u003ctd\u003e6.0 cu ft\u003c\/td\u003e\n\u003ctd\u003e$11,107.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLiberator PRO 10.0\u003c\/td\u003e\n\u003ctd\u003e25,000 gal\u003c\/td\u003e\n\u003ctd\u003e500 lb\u003c\/td\u003e\n\u003ctd\u003e10.0 cu ft\u003c\/td\u003e\n\u003ctd\u003e$12,114.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note warn\"\u003e\n\u003cb\u003eBundled system — call us before you buy.\u003c\/b\u003e GC Tek prices these as a custom build, and the figure shown here is simply the sum of the individual 2026 components. In our experience the factory's bundle price comes in under that. Call the shop with your pond details and we'll quote it direct from GC Tek, confirm the exact configuration, and tell you the freight before anything is built.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/gc-tek-wattmizer-plus-pro-system\"\u003eWattMizer PLUS PRO (manual backwash)\u003c\/a\u003e\u003ca href=\"\/products\/the-liberator-auto-back-wash-cleaning-system\"\u003eTheLiberator on its own\u003c\/a\u003e\u003ca href=\"\/collections\/gc-tek-systems\"\u003eAll GC Tek systems\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"AlphaONE \/ 1.75 — up to 2,500 gal","offer_id":48002893381781,"sku":"LBPRO1.75-AO","price":10036.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 2.50 — up to 5,000 gal","offer_id":48002893414549,"sku":"LBPRO2.50-AO","price":10634.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 4.25 — up to 10,000 gal","offer_id":48002893447317,"sku":"LBPRO4.25-AO","price":10747.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 6.0 — up to 17,000 gal","offer_id":48002893480085,"sku":"LBPRO6.0-AO","price":11107.95,"currency_code":"USD","in_stock":true},{"title":"AlphaONE \/ 10.0 — up to 25,000 gal","offer_id":48002893512853,"sku":"LBPRO10.0-AO","price":12114.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 1.75 — up to 2,500 gal","offer_id":48002893545621,"sku":"LBPRO1.75-AB","price":10036.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 2.50 — up to 5,000 gal","offer_id":48002893578389,"sku":"LBPRO2.50-AB","price":10634.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 4.25 — up to 10,000 gal","offer_id":48002893611157,"sku":"LBPRO4.25-AB","price":10747.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 6.0 — up to 17,000 gal","offer_id":48002893643925,"sku":"LBPRO6.0-AB","price":11107.95,"currency_code":"USD","in_stock":true},{"title":"AquaBead \/ 10.0 — up to 25,000 gal","offer_id":48002893676693,"sku":"LBPRO10.0-AB","price":12114.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 1.75 — up to 2,500 gal","offer_id":48002893709461,"sku":"LBPRO1.75-AN","price":10036.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 2.50 — up to 5,000 gal","offer_id":48002893742229,"sku":"LBPRO2.50-AN","price":10634.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 4.25 — up to 10,000 gal","offer_id":48002893774997,"sku":"LBPRO4.25-AN","price":10747.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 6.0 — up to 17,000 gal","offer_id":48002893807765,"sku":"LBPRO6.0-AN","price":11107.95,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO \/ 10.0 — up to 25,000 gal","offer_id":48002893840533,"sku":"LBPRO10.0-AN","price":12114.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/img-0596_1785205476_2c9aef98-0132-448b-8792-ef69473673b7.webp?v=1789487994"},{"product_id":"gc-tek-megasystem3","title":"GC Tek AlphaONE MegaSystem3 — All 3\" Complete System","description":"\u003cstyle\u003e\n.gct{--ink:#e7ecf1;--mut:#9fb0bf;--bg:#111417;--bg2:#1a1f24;--line:#2b333b;--aq:#22c1dc;--or:#ff7a1a;--ok:#3ddc97;font-family:Inter,-apple-system,Segoe 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details{border-bottom:1px solid var(--line);padding:10px 0}.gct .faq summary{cursor:pointer;color:#fff;font-weight:600;font-size:15px}.gct .faq p{font-size:14px;color:var(--mut);margin:8px 0 0}\n.gct .links a{display:inline-block;background:#0c1e24;border:1px solid #1f4a55;color:var(--aq);text-decoration:none;border-radius:999px;padding:7px 14px;font-size:13px;margin:0 8px 8px 0;font-weight:600}.gct .links a:hover{background:#123540}\n.gct .brand{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}.gct .brand p{margin:0;font-size:13px;color:var(--mut)}.gct .brand b{color:#fff}.gct .brand .tag{color:var(--aq);font-family:'Barlow Condensed','Saira Condensed',sans-serif;font-size:22px;font-weight:700}\n@media(max-width:860px){.gct .feat{grid-template-columns:repeat(2,1fr)}.gct .trust{grid-template-columns:1fr}.gct .two{grid-template-columns:1fr}.gct h2{font-size:26px}.gct{padding:20px 16px}}\n\u003c\/style\u003e\u003cdiv class=\"gct\"\u003e\n\u003cdiv class=\"bto\"\u003e\n\u003csvg width=\"26\" height=\"26\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffb070\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 7h11v9H3zM14 10h4l3 3v3h-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"7\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"17\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003cdiv\u003e\n\u003cb\u003eBuilt to order · ships in about 3 weeks · freight delivery\u003c\/b\u003e\u003cp\u003eGC Tek assembles this unit at the factory after you order — allow roughly 3 weeks before it ships. It travels by LTL freight; \u003cstrong\u003eno freight is charged at checkout\u003c\/strong\u003e. We quote the freight to your address and confirm it with you before anything ships. Local pickup in Upland, CA is always free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"eyebrow\"\u003eGC Tek AlphaONE MegaSystem3 · everything is 3\" · up to 30,000 gal\u003c\/p\u003e\n\u003ch2\u003eMove a lot of water, and use almost nothing to do it\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eThis is the system you build when the pond is big and the electric bill matters. Every component is 3\": the 10.3 filter (10 cu ft of AlphaONE, AquaBead or AlphaNANO media behind GC Tek's Super Hi-Flow 3\" multiport), a 3\" ArtesianPro pump, and a 3\" NishikigoiUV in marine-grade 316 stainless. Friction loss drops off a cliff at 3\", so the pump turns 30,000 gallons at low RPM for a fraction of the amperage a 2\" system would need. Preplumbed on two all-weather pads measuring 48\" x 72\".\u003c\/p\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAuthorized GC Tek dealer\u003c\/b\u003eGenuine product, factory warranty, distributor-direct.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWarranty \u0026amp; support handled here\u003c\/b\u003eWe set up, troubleshoot and handle warranty claims in-house.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFreight confirmed before it ships\u003c\/b\u003eYou approve the freight quote first — no surprises at the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feat\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003e3\" end to end\u003c\/h3\u003e\n\u003cp\u003eFilter, valve, pump, UV and plumbing. No 2\" bottleneck anywhere in the loop.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e10 cu ft of media\u003c\/h3\u003e\n\u003cp\u003e500 lb of koi, 30,000 gallons, 180 gpm through a Super Hi-Flow multiport.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e316 stainless UV\u003c\/h3\u003e\n\u003cp\u003eA 3\" NishikigoiUV amalgam unit with individual ballasts and an hour meter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eYour pump, your way\u003c\/h3\u003e\n\u003cp\u003eArtesianPro high-flow or high-head, or a WunderMax variable speed so you can dial the flow exactly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eThe standard configuration\u003c\/h3\u003e\n\u003cdiv class=\"tbl\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter\u003c\/td\u003e\n\u003ctd\u003eAlphaONE \/ AquaBead \/ AlphaNANO 10.3 — 10 cu ft, 3\" Hi-Flow multiport, 2 HP agitator, ALISS valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePump\u003c\/td\u003e\n\u003ctd\u003e3\" ArtesianPro 1 HP high-flow (variable-speed WunderMax optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV\u003c\/td\u003e\n\u003ctd\u003e3\" NishikigoiUV-H220 amalgam, 316 stainless, 13,000-hour lamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrefilter\u003c\/td\u003e\n\u003ctd\u003eAquaSieve 3.3 SS or 4.4 SS — optional, strongly recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePads\u003c\/td\u003e\n\u003ctd\u003eTwo all-weather pads, 48\" x 72\", preplumbed and unionized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated\u003c\/td\u003e\n\u003ctd\u003eUp to 30,000 gal \/ 500 lb of koi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAs configured\u003c\/td\u003e\n\u003ctd\u003e$9,272.60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"note warn\"\u003e\n\u003cb\u003eBundled system — call us before you buy.\u003c\/b\u003e GC Tek prices these as a custom build, and the figure shown here is simply the sum of the individual 2026 components. In our experience the factory's bundle price comes in under that. Call the shop with your pond details and we'll quote it direct from GC Tek, confirm the exact configuration, and tell you the freight before anything is built.\u003c\/div\u003e\n\u003cdiv class=\"note\"\u003eAlso available around the \u003cb\u003e6.3 filter\u003c\/b\u003e (6 cu ft) for a smaller all-3\" build, and with a variable-speed pump or a PoliGlassBead polishing filter plumbed in at the factory. Tell us the pond and we'll spec it.\u003c\/div\u003e\n\u003cdiv class=\"links\"\u003e\n\u003ca href=\"\/products\/alphaone-3-port-mega-filters\"\u003e6.3 \/ 10.3 filters on their own\u003c\/a\u003e\u003ca href=\"\/products\/aqua-sieve-2-pond-strainer\"\u003eAquaSieve 3.3 \/ 4.4 SS prefilters\u003c\/a\u003e\u003ca href=\"\/products\/gc-tek-nishikigoiuv-horizontal\"\u003eNishikigoiUV\u003c\/a\u003e\u003ca href=\"\/collections\/gc-tek-systems\"\u003eAll GC Tek systems\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"sec\"\u003eOrdering \u0026amp; delivery\u003c\/h3\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long until it ships?\u003c\/summary\u003e\u003cp\u003eMost GC Tek filters and systems are assembled to order in Chandler, Oklahoma. Typical lead time is about 3 weeks from order to ship, then transit time. Parts and media we stock ship from Upland, CA within a day or two.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy no freight at checkout?\u003c\/summary\u003e\u003cp\u003eFreight for a pressure filter or pre-plumbed system depends on your address, liftgate needs and residential vs. commercial delivery. Charging a flat guess would overcharge some customers and undercharge others, so we quote it to the dollar and confirm with you before shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I pick it up instead?\u003c\/summary\u003e\u003cp\u003eYes — pick up free at Mystic Koi \u0026amp; Water Gardens in Upland, CA. Choose local pickup at checkout or tell us in the order notes and we'll skip freight entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho handles the warranty?\u003c\/summary\u003e\u003cp\u003eWe do. As an authorized GC Tek dealer we process warranty and parts through the factory for you — no shipping the tank back across the country.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand\"\u003e\n\u003cp\u003e\u003cspan class=\"tag\"\u003eGC Tek\u003c\/span\u003e\u003cbr\u003eGrand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMystic Koi \u0026amp; Water Gardens\u003c\/b\u003e — authorized GC Tek dealer, Upland, California.\u003cbr\u003eQuestions on sizing? Call the shop and talk to someone who runs these filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GC Tek","offers":[{"title":"AlphaONE","offer_id":48002896199829,"sku":"MEGSY3-AO","price":9272.6,"currency_code":"USD","in_stock":true},{"title":"AquaBead","offer_id":48002896232597,"sku":"MEGSY3-AB","price":9272.6,"currency_code":"USD","in_stock":true},{"title":"AlphaNANO","offer_id":48002896265365,"sku":"MEGSY3-AN","price":9272.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/4961\/9245\/files\/img-0667_1785644675.webp?v=1789488049"}],"url":"https:\/\/mystickoi.com\/collections\/gc-tek.oembed","provider":"Mystic Koi \u0026 Water Gardens","version":"1.0","type":"link"}