Diffuser Diffuser Type Diffuser Disc Air Flow Rate (Maximum) 7 scfm Air Flow Rate (Minimum) 1 scfm Active Surface Area 28 sq in Compatible Intake Pipe Size 3/8 in Minimum Depth Required 6 in Bubble Type Medium Bubble Size 6 to 10 mm Number of Air Tubing Rolls 0 Number of Compressors 1 Discharge Type Disc Active Membrane Diameter 3 in Active Membrane Material EPDM Air Tubing Diameter 1/2 in Compatible with Media Type Wastewater Oxygen Filtered Water