Description
Master Water Conditioning HIMSV 7 Replacement UVC Light Bulb Item:Shatterproof Coating Replacement Quartz Sleeve for Aqua Replacement Quartz Sleeve for Aqua Ultraviolet 21 Watt UV Light Bulb for Germicidal Water Treatment Experts are of the opinion that the UV light bulb must be replaced annually for efficiency as the light bulb may continue to emit UV light even after a year but may not be effective in destroying waterborne microorganisms