Aqua UV Advantage UV Sterilizer 2000+ Barb x Barb - 15 WattAdvantage 2000 Barb x Barb 15 Watt The Advantage Series Ultraviolet Water Sterilizers are a versatile technology used for disinfecting water, other opaque liquids, hard surfaces and air. Using the same germicidal rays as the sun, but hundreds of times stronger, Ultraviolet water sterilizers offers a reliable, cost effective, environmentally friendly alternative to chemicals and their resulting bi products. UV lights for water use a purely physical