Pondmaster 20W UV Clarifier for Ponds Up to 3,000 gal., Includes Bulb/Quartz Sleeve

PONDMASTER ULTRAVIOLET CLARIFIERS safely control free-swimming "suspended" algae without the use of any chemicals or water treatments. "Suspended" pond algae causes your pond water to become green and cloudy. Pondmaster Ultraviolet Clarifiers help maintain crystal clear water in your pond by passing it in a spiral motion across the UV Lamp mounted inside the housing, greatly reducing the algae levels in your pond. They be used either fully submerged or out of the water and feature a glowing monitor Halo Ring that shows the clarifier is working. The soft blue Halo is visible during the day or at night from any angle, but does not detract from the beauty of your pond. Pondmaster Ultraviolet Clarifiers are designed to handle the clarifying needs of ponds up to 6,000 gallons.