The 40 Watt Clarifier/Sterilizer is Suitable For Small Ponds Up to 6000 Gallons Using Pumps Up to 3000 Gph. Product Comes Complete with 9000 Hour, Long Life 40 Watt Lamp and Water Tight Quartz Sleeve. The Black Color Is Unobtrusive Whether Used In Or Out of the Water. This Fully Submersible Unit's Vortex Flow Design Exposes Water Longer to Ultraviolet Light. It has a Glowing Monitor Halo Ring Visible From Any Angle Immediately Shows It's Working. Product Includes TransFormer and 18' Grounded Power Cord.
