Pump Power requirements: A Honda IC Engine powered 3” Centrifugal pump was used to draw water from the tank with a 3” suction pipe and pumped through a 2” inlet to the Flow Meter followed by a 2” delivery pipe to the Aeration head. Flow Rate: 30m3 / hr or 8.33L / sec, 200kPa at outlet. The 200kPa( 20.4m H2O) represents static head loss plus the frictional loss from piping and the aerator unit( approx. 6.3m H2O for piping). Hence Aerator water power required: