Aquatop Internal SP7-UV Submersible UV Filter Jet BlackThe Aquatop SP7 UV submersible UV sterilizing pump (72 126 GPH) is a new and innovative method for eradicating and controlling free floating micro organisms as well as disease causing pathogens. Unlike typical UV sterilizing systems, the SP7 UV requires no special plumbing and is easy to use and maintain. Simply place the SP7 UV directly into your tank or sump system up to the waterline. The built in pump will draw water in, running it past the 7 watt