The Advantage 2000 UV sterilizer is designed to maintain high intensity performance in a smaller lightweight housing. Ultraviolet is a proven dependable and effective method of controlling algae and harmful bacteria without leaving any residuals in the water. Aqua Ultraviolet utilizes the highest quality components designed to work perfectly together maximizing kill rates and insuring ease of installation and maintenance.  The Advantage 2000 Sterilizer is the premium choice for water sterilization or clarification for 5-200 gallon ponds. When used as a sterilizer it will control the amount of harmful bacteria in your pond creating a healthier environment for your ponds ecosystem. When using this unit as a clarifier it will clear ponds up to 1500 Gallons size with 50% to 75% plant coverage.