Patented dual-sided dense-floss cartridges contain over 25% more activated carbon than the leading brands. These unique cartridges were designed to ensure even distribution of carbon throughout for more thorough filtration and longer cartridge life.
Fits Aqueon QuietFlow Filter: LED PRO Size 20 & up and E Internal 40 gallon
Ready-to-use cartridge contains high quality activated carbon that keeps water clean, rinse before replacing
Installs in seconds: align cartridge bottom key slot for an accurate fit inside the Filter
For optimal performance, change approximately every 4 to 6 weeks
Do not clean Bioholster when replacing the cartridge as it contains beneficial biological bacteria
buy Aqueon QuietFlow Filter Cartridge, Large, 12-Pack online, best price $33.84 new 2018-2017 bestseller, review