Tetra Whisper Bio-Bag Filter Cartridges For Aquariums - Unassembled
- UNASSEMBLED REPLACEMENT CARBON FILTER Keeps aquarium water crystal clear – removes odors and discoloration.
- CATCHES DEBRIS Dense dual-sided mesh filters debris and fish waste.
- FITS TETRA WHISPER WATER FILTERS Color coded to make it simple to remember which replacement cartridge size to purchase.
- CONVENIENT Easy to assemble and easy to replace.
- USAGE Change monthly or sooner if needed.