The AquaClear Power Filter represents one of the most versatile hang-on filter systems available. The five models available provide a complete selection of flow rates for the most popular sizes of aquariums. The filter's unique design allows for up to six times more media volume and the longest water to media contact time in the industry. The AquaClear 30 Power Filter features a unique multi-stage filtration system that provides complete mechanical, chemical as well as biological filter media for superior water quality. The Power Filter has a filtration volume that is up to 7 times larger than comparable filters. It also allows superior contact time with AquaClear filter media. The filter preserves beneficial bacterial creating a stress-free environment for fish aquarium inhabitants (freshwater fish and live aquarium plants) and maintaining clear aquarium water. Its unique waterfall design enables filtered water to return to the tank silently, gently breaking the surface tension and creating beneficial oxygenation. The Power Filter's patented flow control feature allows you to adjust the water flow according to your aquarium needs. The media basket prevents water from by-passing the filter media, maximizing filtration efficiency. Installation and maintenance are quick, easy, and convenient. The filter comes equipped with AquaClear Foam, Activated Carbon Filter and AquaClear BioMax. AquaClear offers an extensive line of media, including Zeo-Carb and Ammonia Remover, exclusively designed for the AquaClear 30 Power Filter. AquaClear creates a wide variety of products for freshwater tanks that can be used as fish tank accessories, fish tank decorations, and aquarium filter media that is perfect for large and small fish tanks. The AquaClear 30 Power Filter is ideal for 10- to 30-gallon (38 to 114 L) aquariums. Maximum Output: 150 U.S. Gal./h (568 L/h).