Pentair Aquatic Eco-Systems 40 Watt UV Light
This light is rated for ponds up to 4,700 gallons. Recommended pond size for this unit is 2,800 gallons. Flow rates are 16 – 26 gallons per minute for optimum contact time with the UV light. Constructed with a 3 inch body with 1.5 inch inlet and outlet unions and comes installed with an adjustable “by-pass” for maximum performance. A good UV Light will guarantee you never have green water in your pond.