Aqueon 24 Pack of Replacement Filter Cartridges for Aqueon QuietFlow 20, 30, 50, 55 and 75 Power Filters, Large

High quality activated carbon keeps aquarium water clean. Align cartridge bottom key slot for an accurate fit inside the fish tank filter. For optimal performance, change your Aqueon filter cartridges approximately every 4 to 6 weeks. Genuine replacement parts for QuietFlow LED Pro Power Filter 20, 30, 50, 75; QuietFlower Power Filter 20, 30, 50, 55/75; QuietFlow E Internal Power Filter 40; QuietFlow Canister Filter 200, 300, 400.