EasyPro Pond Products PA34 Rocking Piston Aeration System Includes new EasyPro self-sinking diffuser base QS1- eliminates the need to add gravel or sand to weight the diffuser Tubing: 100 feet of 3/8 inch poly Horsepower: 1/4 HP Voltage: 115/230V Maximum air flow: 2.3 CFM