Nuvo trade; Ultraviolet Water Sterilizer for In-ground Swimming Pools The Nuvo Ultraviolet Water Sterilizer kills what chlorine can't in your swimming pool. High intensity ultraviolet system at a low cost No moving products parts for longevity and for ease of mind knowing it will not break down Only cost a few cents a day to run. In-Ground Model Details: Up to 20,000 gallons 220 Volt (Hard Wire) 50 Watt bulb