Little Giant Professional Series Pumps are designed to provide flow rates with enough pressure to handle filtration systems, streams, fountains, waterfalls, etc. Flow rates from 4260 to 5800 gallons per hour allow for operation in ponds from 1000 to 6000 gallon capacity. (Pumps should be sized to completely circulate water at least once per hour). Housings are glass-filled, polypropylene. Impellers are glass-filled noryl. Motors are enclosed for excellent protection and weather resistance. Quiet design means noise levels are equivalent to a small fan.