Aqua Clear Power Filter - 110 V Refiltration system that offers superior contact time with filter media and energy efficient pump lowers operating costs Quick and easy installation Filtration volume is up to 7 times larger than comparable filters Comes equipped with AquaClear Foam, Activated Carbon and BioMax and Cycle Guard for continuous biological filtration and superior water quality 2-year warranty; Ideal for aquariums up to 30 gallons