Pondmaster Submersible UV Clarifiers feature a glowing monitor halo ring that immediately shows it's working. Each UV Clarifier / Sterilizer includes a 9000 hour bulb, water tight quartz sleeve, transformer and 18' power cord.
The Pondmaster UV Sterilizer can be placed outside the pond, and its black color makes it unobtrusive wherever it's used. Visible during the day and night from any angle, the soft blue halo shows it's working but does not detract from the beauty of your pond. These lights offer great value along with ease of use unsurpassed by any other ultraviolet sterilizer.
UV Light Specifications:
10 Watt UV - 700 GPH Max - 3/4" Barb Inlet/Outlet
20 Watt UV - 1,800 GPH Max - 1" Barb Inlet/Outlet
40 Watt UV - 2,400 GPH Max - 1.5" Barb Inlet/Outlet
UV Light Dimensions:
10 Watt UV - 1 Light Halo - (12"L x 4"W)
20 Watt UV - 2 Light Halos - (18"L x 4"W)
40 Watt UV - 3 Light Halos - (24"L x 4"W)
When to use a UV Sterilizer:
Most Koi keepers will keep their unit(s) on year round. But for small garden ponds you may find that only in the spring, with the combination of longer days and an upsurge in fish activity, is UV necessary. If you do run your UV year-round, it must be protected from frost in a well-ventilated housing. Remember it is important to replace your UV lamps annually for peak performance.