JBL Water Jet Pump for a fast and simple water change in your aquarium. Simply screw the JBL Water jet Pump on to water tap. Water current creates suction which siphons off water from aquarium. Connects to hose siphoning water from aquarium via sediment bell. Can be changed in an instant from “siphon off” to “refill”. Even siphons water from aquariums positioned lower than washbasin.Do you have questions about this article ?