Aqua Ultraviolet’s UV light water treatment replacement lamps are compatible with almost all Aqua UV sterilizers. These UV sterilizer replacement lamps are available for both the Advantage and Classic series units. Both the Classic and Advantage Series sterilizers work in a similar way. The ultraviolet lamp is proven to control algae, bacteria, and protozoa by emitting a germicidal ray which alters the DNA or RNA of single-celled organisms, eradicating these organisms without causing any harmful effects to the water. When properly installed, Aqua Ultraviolet’s UV sterilizers will clear water within 3 to 5 days.