Lotus Green Genie 3500 Pond Filter with 10W UV - Guaranteed Clear Water!
A Koi pond especially needs sufficient filtration to ensure clean, clear, healthy water. Lotus Green Genie 3500 Filter. Green Genie 3500 Specifics UV Bulb: 10W. Includes Ultraviolet lamp. Inlet & Outlet: 19-25mm and 32mm.