Tetra Bio-Bag Cartridge Large 12 pack

Help keep your aquarium crystal clear with Tetra’s Whisper Bio-Bags. These disposable filter cartridges are easy to use and work to keep your fish tank in tip-top condition. The ultra-activated carbon is designed to absorb discoloration and foul odors while the dense, double-sided mesh works to trap debris and fish waste. These Bio-Bags are designed to fit Whisper, Power Filters 20i, 40i, C, 20, 30, 40 and 60 (not included). Best of all, they come pre-assembled and ready to use!