The PondXpert FeatureFlow is a new range of pumps designed to produce a flow of water to power water features and pond spittersornaments.The FeatureFlow 4000 is one of the largest pumps in the range producing a maximum flow rate of 4000 litres per hour 880 gallons per hour. This powerful flow is always under your control as the pump has a built in flow adjustment mechanism that allows you to turn the water flow up or down as you need.