Use just 32 watts to reach 1600 GPH! A tank should be between 80 and 500 gallons or more. NEW WiFi The controller Authority and command Two pumps App-controllable Mode of Dual Feeding (15-60 minutes) Four preset modes for pulsing 0–10V Complementary Magnetic mount that can be adjusted Magnets made of rare earth Small and strong Operation in silence The Octo Pulse 4+ is a highly controllable and efficient device that uses only 32 watts of power while producing a broad, pleasant flow that your fish and corals will adore. By pushing the flow throughout your tank, "hot spots" are removed and your corals are protected from blasting. With its powerful 4500 GPH and 360° magnetic mounting, you can precisely direct your water flow where you need it. The Octo Pulse pumps can be mounted using a convex/concave system.