{"title":"GC Tek Nishikigoi Line — New for 2026","description":"\u003cp\u003eGC Tek's 2026 Nishikigoi line: NishikigoiUV 316-stainless amalgam UV (horizontal and vertical), NishikigoiRDF rotating drum filters in polypropylene or stainless, Wakimizu bakki showers and media, and NishikigoiAIR air pumps. Drums and showers are built to order; freight quoted before shipping.\u003c\/p\u003e","products":[{"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 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 · 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 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 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 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 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}]}],"url":"https:\/\/mystickoi.com\/collections\/gc-tek-nishikigoi.oembed","provider":"Mystic Koi \u0026 Water Gardens","version":"1.0","type":"link"}