Aqueon Quietflow power filters combine ultra-quiet operation, industry-high flow rates and enhanced filtration to provide the ideal filtration solution for your aquarium. An in-tank pump design virtually eliminates noise and lowers the overall profile of each filter so it can fit behind your aquarium more easily. The design also lets you start the filter with no priming. Double biological grids, including a unique wet/dry mechanism, provide a large amount of surface area to support beneficial bacteria growth for bio filtration. The Quietflow's Lab-tested flow rates skew higher than similarly-sized power filters. Simple-to-replace filter cartridges round out this easy-to-use, powerful tank filtration package.
The electronics of the filter are quiet. But the water flow coming into the filtration area is loud. Then, coupled by the 'bio grid', the water returning to the tank is also quite loud. I have tried different water levels, none seem to work. Our TV room sounds like a constant waterfall, and the TV volume had to be increased. Other than the noise level, it cleans well.
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