36 watt High Pressure Stainless Steel UV Sterilizer Clarifier Pond Koi STU-36W AC100-120V 50/60HZ Input 36w UV Bulb, Through Flow Sterilization at 6000 GPH Good for up to 16,000 Gallons Pond Inlet & Outlet Adapter 0.36", 1", 1.25", 1.5" Dimension 24"x11"x4"