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GC Tek filter media · BioGems · AlphaBioONE · AlphaNANO · by the cubic foot
Top up, convert, or fill a new tank
Genuine GC Tek media in quarter, half, three-quarter and full cubic feet. BioGems is the classic small floating bead for AquaBead filters. AlphaBioONE is the open-cell, dimpled, air-injected media that made the AlphaONE the best-seller — it distributes debris through the whole bed. AlphaNANO 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.
BioGems
Small floating bead, high surface area, long service life — the AquaBead standard.
AlphaBioONE
Open cell, dimpled, air-injected so it never clogs on backwash.
AlphaNANO
600+ sq ft per cu ft; polishing-filter clarity with AlphaONE flow.
Converting?
AquaBead → AlphaONE retro kits (new bottom spray bar + media) are quoted per size — ask us.
| Media | 0.25 cu ft | 0.5 cu ft | 0.75 cu ft | 1 cu ft |
|---|---|---|---|---|
| BioGems (AquaBead) | $40.95 | $75.95 | $105.95 | $132.95 |
| AlphaBioONE (AlphaONE) | $40.95 | $75.95 | $105.95 | $132.95 |
| AlphaNANO | $40.95 | $75.95 | $105.95 | $132.95 |
GC Tek
Grand Champion Technologies · Chandler, Oklahoma · pond filtration built in the USA
Mystic Koi & Water Gardens — authorized GC Tek dealer, Upland, California.
Questions on sizing? Call the shop and talk to someone who runs these filters.

