Top Quality No Noise Two Coral Fish Sea Grass Plant Weed Pond Water Filter Air Aquarium Pump 370 GPH In marine and reef tanks where "turbulence" - multi-directional water flow - is critical to health and growth, water pumps are ideal. This dynamic and fully submersible TWO 370 GPH Aquarium Water Pumps let you have your aquarium cleared and revitalized. This item can be used to keep water circulation so as to make your fishes, corals and other aquatics enjoy a vital and energetic ocean-like circumstance. More powerful than a powerhead! No worrying about the turbid water in aquarium annoys you any more. No worrying the fish feel like inanimate forever. It is perfect for using in a aquarium, fountain, pond etc.