Aqueon Filter Cartridge Medium Size 24-Pack

Aqueon QuietFlow Power Filters feature four stages of filtration – mechanical chemical biological and wet/dry – for the cleanest clearest healthiest water. Higher flow rates ensure higher dissolved oxygen content for healthier more active fish. The internal pump design helps dampen noise eliminates leaks and starts up automatically after cleaning or power interruptions. Highlights Auto-start self-priming filter Lifetime Warranty No wheel to stop turning Bio-Pin Wet Dry Technology Product Features Higher Flow Rates Aqueon filters have higher flow rates than the competition to ensure proper turnover for cleaner water and higher dissolved oxygen content making fish healthier and more active. Superior Biological Filtration The patented biological grid has a large surface area to support more of the beneficial bacteria that eliminates ammonia and nitrates. A second wet/dry grid provides further biological filtration and oxygenation as the water returns to the aquarium. Internal Pump Design Since the filter pump is submersed in the aquarium there is no need for priming at setup or when restarting the filter after cleaning or power interruptions. An internal pump also allows for virtually silent operation continuous flow raters less chance for leaks and a much thinner profile. Four Stage Advanced Filtration System Stage 1: Dense floss removes particles and debris. Stage 2: Activated carbon removes toxins odors and discoloration. Stage 3: Patented Bio-Holster removes toxic ammonia and nitrites. Stage 4: Diffuser grid removes additional toxins while adding oxygen for more active fish. It also reduces splashing makes the return exceptionally quiet. QuietFlow Comparison Chart Filter Type Gallons per Hour Size QuietFlow 10 100 6.4×3.8×6.3 QuietFlow 20 125 7.4×4.4×7.9 QuietFlow 30 200 8.4×4.6×7.9 QuietFlow 50 250 8.4×4.1×7.9 QuietFlow 55/75 400 12.9×6.6×8.4 .