Sunsun JVP-201B 1585 GPH Dual Aquarium Wavemaker Powerhead w/Magnet Clamp Base Totally submersible and oil-free motor to avoid pollution to the living circumstance 1585gph flux and wide-spread range which is ideal for marine aquarium 360 degree rotation to allow full flow directions Magnet clamp base to lock and secure the wave maker in place Extremely low energy consuming - requires 12 watt power