Use just 32 watts to reach 4500 GPH! The ideal tank size is between 80 and 500 gallons or more. Magnetic mount that can be adjusted Magnets made of rare earth Small and strong Operation in silence comprises Controller for Octo Pulses Four preset modes for pulsing Control: 0-10V Feed modes of 15 and 60 minutes The Octo Pulse 4, which uses only 32 watts of power and is completely controllable, creates a lovely, wide 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 the Reef Octopus Octo Pulse Wave Pumps' strong 1600 GPH and 360° magnetic mounting, you can precisely control the flow of water where you need it. The Octo Pulse pumps can be mounted using a convex/concave system.