The evoUV range of clarifiers have been designed to clear green water which is caused by single celled green algae and prevent it from returning. They will work alongside many different filtration systems but when used alongside Evolution Aqua’s pond filtration systems, the evoUV will help to deliver crystal clear and healthy pond water. evoUV professional quality UV can be connected to your pond pump and filter with flexible hose using the stepped hosetails provided, or you can install the unit using hard pipe. Installation & Operating Manual Replacing Ballast Box Instruction **These flow rates are suggested for clarification of green water blooms only. Slower flow rates will increase the kill rate of water borne bacteria. Try to max out the recommended flow rate of the unit to get the best results for clarification. *Not intended for salt water application.* Model Max Pond Size (Gal.) Inlet & Outlet (In.) Max Flow (GPH) Lamp Wattage Fittings Supplied EVO15 4000 1½" 1800 15 Watts 1½"& 2" Threaded Hosetail EVO25 5300 1½" 2500 25 Watts 1½"& 2" Threaded Hosetail EVO30 7900 1½" 3500 30 Watts 1½"& 2" Threaded Hosetail EVO55 14500 1½" 5000 55 Watts 1½"& 2" Threaded Hosetail EVO110 19500 2“ 6000 110 Watts No Fittings Supplied