The Hagen AquaClear Power Filter provides mechanical, chemical and biological filtration through their multi-stage filtration system. Filtration volume is up to 7 times larger than comparable Filters. Its unique design filters aquarium water through a natural and silent waterfall. The patented flow control feature allows for customized filter performance. The Hagen AquaClear filter preserves beneficial bacterial creating a stress free environment for aquarium inhabitants and maintains clear aquarium water. Installation and maintenance are quick, easy and convenience. The filter comes equipped with AquaClear Foam, Activated Carbon and BioMax. We also carry AquaClear replacement parts and AquaClear filter media.