Tetra Bio-Bag Filter Cartridge The Tetra Bio-Bag Filter Cartridge helps keeps the water crystal clear, and removes odors and discoloration. This filter is easy to assemble, and offers you a clean, easy-to-maintain aquarium. The filter is filled with ultra-Activated carbon, and ready-to-use disposable single packs to remove waste particles, odors and discoloration. Features: . Come unassembled and offers economical pricing on larger quantities . For best results change Bio-Bag monthly . Easy to use . Durable . Replace your whisper Bio-Bag when water begins to overflow excessively from the wonder tube chamber or once per month
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$7.49
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