The ideal pump for both small statuary, tabletop fountains and general circulating. Excellent for use in laboratory equipment and other commercial applications requiring a compact, energy efficient water pump. The Arteich RO500S also features a combination flow control and pump pre-filter, heavy-duty cord, impedance protection and UL listing for both indoor and outdoor use. The pump is an excellent replacement pump for the Rena Flow 400S and Fountain Pro WT125P.