Aquatop SP9-UV Submersible UV Filter Sterilizer Pump, 9W, 264 GPH, for Aquariums up to 100 Gallons

The Aquatop SP9-UV submersible UV filter is a new and innovative method for eradicating and controlling floating algae. Unlike typical UV clarifying systems the SP9-UV requires no special plumbing and is easy to use and maintain. Simply place the SP9-UV directly into your tank or sump system up to the waterline. The built in pump will draw water in running it past the 9 watt UV bulb. The UV light will clean and clarify producing crystal clear water.