UVC Clarifiers

UV-Clarifiers kill 99% of single cell floating algae (green water) as well as a small percentage of disease organisms. They do not harm the beneficial bacteria that grow in filters and on rocks, etc. in the pond. They only kill the organisms that pass through the UV.

When to use a UV:
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.

How much UV do you need for your pond?

For green water eradication, 8-10 watts per 1,000 gallons is usually recommended. However, to properly size your UV you must consider your pond gallons, the filter size, the amount of sunshine per day and the fish load. A very sunny pond with a lot of koi and a small filter will need more UV power to give clarity. You may consider to up size your UV in order to give the best results for your situation.