9W G23 UV-C Bulb for Pond Filter - Quartz Lamp for Algae Control & Sterilization
9W G23 UV-C Bulb for Pond Filter. Are you looking to maintain the health and clarity of your pond?. Why Choose Our 9W G23 UV-C Bulb?. For sterilization, replace every 6 ; for pond clarification, replace every 6-12.