Keep your pond or aquarium crystal clear with the Arcadia 25-watt T8 UVC bulb. Designed for use in ultraviolet clarifiers, this 450mm bulb is a powerful solution for controlling algae and maintaining healthy water conditions. Product Features: Powerful 25W UVC Output Effectively reduces green water and algae growth. Standard T8 Size (450mm Length) Fits most UV clarifiers that require 25W T8 bulbs. Quick & Easy Installation Simple plug-in replacement to get your system running again fast. Crystal-Clear Water Helps improve water clarity and supports healthy aquatic life. Long Lifespan Durable and efficient for extended use (replace annually for best results). Ideal For: Garden ponds Aquariums UV water clarifiers Fish tanks with algae issues Specifications: Wattage: 25 watts Length: 450mm Type: T8 UVC bulb Installation: Plug-and-play replacement Compatibility: Fits UV clarifiers designed for T8 25W bulbs