The Reef Octopus VarioS Circulation pump features a detachable controller with mount, high quality ceramic shaft with propeller bearing to reduce wear and tear and the latest variable speed flow technology for refined control, enhanced performance, energy-efficiency and safer operations. Unlike the vast majority of circulation pumps which uses alternating current (AC), the VarioS pump boasts several key advantages over traditional AC pumps like greater energy efficiency and safer low voltage operation and produce less heat per volume of flow.