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 TechnologyProduct Features Higher Flow RatesAqueon 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 FiltrationThe 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 DesignSince 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 SystemStage 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 Gallons per Hour Size Replacement Cartridge Size QuietFlow 10 100 6.4'x3.8'x6.3' Medium QuietFlow 20 125 7.4'x4.4'x7.9' Large QuietFlow 30 200 8.4'x4.6'x7.9' Large QuietFlow 50 250 8.4'x4.1'x7.9' Large QuietFlow 55/75 400 12.9'x6.6'x8.4' Large (2)Product Description: Aqueon QuietFlow LED Power Filters feature five stages of filtration-mechanical, chemical, biological and a specialty filter pad - for the cleanest, clearest, healthiest water.

Easy-to-replace filter cartridge contains 25% more activated carbon than the leading brands to effectively remove dissolved organic waste materials. Our patented designs include unique features to enhance water quality and clarity, increase oxygen levels and lessen noise. A great benefit of the Aqueon QuietFlow filters is the internal pump design that helps dampen noise, eliminates leaks and is self-priming, meaning it starts up automatically after cleaning or power interruptions.