Water circulation is essential for many reasons: certain species of fish require it, it helps release toxic gasses built up in your tank water and corals use it to help feed. Save money circulating your tank with Coralife's new circulation pumps! Efficient motor is approxiamtely 8 times more efficient than comparable old-style powerheads. Titanium-plated stainless steel shaft attached to a turbo impeller ensures durability. Features suction cup and pivot brackets for easy mounting and adjustments.