Aqua Ultraviolet® Classic Twist 57 Watt UV Clarifiers/Sterilizers Pressure-Treated Pine It comes with a brass

It comes with a brass ball valves which gives fine control of fountain volume

It reduces ammonia levels as well as biological oxygen demand (B

4oz 780 Square Feet 29313 827807293134 7lb 2275 Square Feet

For ponds & water gardens with biological filtration

Aqua Ultraviolet® Classic Twist 57 Watt UV Clarifiers/Sterilizers Pressure-Treated Pine It comes with a brassThe Aqua Ultraviolet Classic Series UV Clarifiers are ideal for ponds, aquariums, and water features. The rugged design of this ultraviolet sterilizer has features that allow for quick installation and easy maintenance. Twist body with rotating union for flexible installation Longest bulb life on the market means replacing less and saving money! Highest quality quartz sleeve for 99. 9% UV transmission rate Clear quartz cap makes it easy to see if lamp