Replacement for Coralife 05741 3X Turbo Twist UV Replacement Lamp 9 Watt 9W * Works with 110 Volt 120 Volt 130 Volt 220 Volt 230 Volt 240 Volt * Reduces micro-organisms and bacteria , Water is sterilized using our 9 watt and water is pumped out into filter or pond * 9 Watt UV-C Germicidal Ultraviolet Replacement Bulb * Prevents DNA of germs to reproduce. 9 Watt G23 base UV-C