ZenBlue CUV-211 Pond and Aquarium UV Sterilizer/Clarifier with UV Bulb, 11-watt

The ZenBlue CUV-211 ultraviolet (UV) sterilizer/clarifier is a great way to reduce or eliminate algae in your aquarium or pond. With a powerful 11W bulb the CUV-211 allows water to pass in front of the UV light which kills algae as it cycles through the clarifier. Easy to install and 3 inlet/outlets for multiple setup options. The CUV-211 is suitable for aquariums up to 70 gallons and ponds up to 1850 gallons. Easy release Bulb/Quartz for simplified maintenance. Includes external ballast. Compatible with 1/2", 3/4", 1", 1 1/4" and 1 1/2" hoses.