Fluval Sea Circulation Pumps space saving size and innovative design provides many outstanding benefits: it minimizes tank intrusion, improves energy efficiency and delivers a smooth broad stream of ocean-like current. Unlike other pumps, this efficient circulation pump broadcasts output to assist corals with a gentle, indirect current.Simulates natural reef currents; Adjustable flow direction; Exceptional hydraulic performance with the lowest energy consumption/LPH ratio; Super quiet compared to most models; Safe to use with timer system (will not cause pump failure unlike many competitive models; Secure, flexible aquarium mounting