http://tinyurl.com/nlyrp43<P>Pondmaster 02920 20-Watt Ultra-Violet-Light Pond Water ClarifierProduct Review<P> Click on the link for more reviews<P>20-watt UV water clarifier effectively kills suspended algae, eliminating green-water pond problems<P>Suitable for medium ponds up to 3000 gallons using pumps up to 1800 gph<P>Vortex flow design and slim diameter provides added efficiency; installable in or outside pond<P>Includes 9000-hour 20-watt lamp, transformer, 18-foot power cord, and watertight quartz sleeve<P>Measures approximately 19 by 4 inches; 1-year warranty<P>
