| Pondmaster's Supreme UV Clarifiers can be used submerged in your pond or be placed outside of your pond Pondmaster's fully submersible unit's vortex flow design exposes water longer to ultraviolet light  Glowing monitor halo ringTM, visible from any angle immediately shows it's working Comes complete with 9000 hour, long life 10, 20 or 40 watt lamp and water tight quartz sleeve Includes transformer and 18' grounded power cord Black color is unobtrusive whether used in or out of the water. |