O2 Commercial Air Pump, 571 gph 2.47 psi 20watts 120volt Hydroponics,Aquarium,Pond air pump The Elemental Solutions O2 Commercial Pumps powerful electromagnetic motor pushes 571 gallons per hour to provide reliable output for air diffusion devices. It features high-quality aluminum alloy housing and a wear-resistant cylinder and piston. The 120-volt, 20-watt O2 commercial pump includes a six-outlet air divider and 1/4-inch-ID connection tubing. The air divider is compatible with 3/16-inch-ID tubing. The Elemental Solutions O2 Commercial Pump features a one-year warranty.