Aqua UV A20025 UV Replacement Bulb for Classic Sterilizer - 25 watts, T5F Base
MFG Part Number: A20025. Aqua Ultraviolet part number A20025. 25 watts, T5F Base. Base: T5F. How to Change Your Aqua Ultraviolet Lamp and Quartz Sleeve. UV bulbs should be replaced yearly for best results.