Use this fountain pump from smartpond® for medium to large sized fountains without worrying about evaporation. The ETL rated submersible pump offers a maximum flow rate of 300 GPH and will automatically turn off when the water level in the fountain decreases below the fountain inlet to prevent burnout. The flow can be adjusted up to an ideal height range of 5-ft with the built-in adjustable flow control. The pump is oil free and offers a quiet operation. Plus, your fountain will look beautiful at night with the included LED light.