Elemental Solutions O2 Commercial Pump 1157 GPHThe Elemental Solutions O2 Commercial Pump's powerful electromagnetic motor pushes 1,157 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, 65 watt O2 Commercial Pump includes a six outlet air divider and 3 8 inch ID connection tubing. The air divider is compatible with 3 16 inch ID tubing (available separately). The O2