Tetra (Whisper, Tetra Tec, WDF) Bio-Bags & Filter Cartridges
Tetra filter cartridges and Bio-Bags are made to fit your Whisper and Tetra Tec power filters, your Whisper internal power filter or your WDF. Check out our filter media section for more Tetra products for your filter. Clean or change your Tetra filter cartridge as needed to keep your filter running smoothly!
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