Whisper bio-bag cartridges complete the Whisper power filter package for a clean, easy-to-maintain aquarium.
Easy to Assemble, Easy to Replace
The Whisper Bio-Bag multi-packs come unassembled and offer economical pricing on larger quantities
Three stage filtration
Frequently Bought Together
This item: Tetra 26160 Whisper Bio-Bag Cartridge, Unassembled, Medium, 12-Pack$5.97