530gph- Aquarium Wave Maker Reef Fish Tank Powerhead Circulation Pump with Suction Cup Totally submersible and oil-free motor. 530 GPH flux 360 degree rotation to adjust flow in any direction. Suction cups with articulating ball joints for versatile directions. Extremely low energy consuming of 2.5 W. Revitalized your aquarium and to eliminate dead spots. No more debris settling on the bottom or in the corners of the tank. No other side effects to the fishes, the corals and other aquatics.