|
Judy...
the fact that the pond has algea means there is food present for this single cell plant to consume. They are trying to help water quality by eating the plant food known to us as amonnia. This does help the water quality. But if they can't keep up with the food source then the green water covers up the sores from ammonia burn/infection and other problems. So we put a UV light on the water and......
GET A BETTER LOOK AT THE SORES AND THE PROBLEMS!!!!!!!!!!
green water means that the filter ( for whatever reason) is not doing it's job!
Here in the pacific NW many ponds have trouble in the spring because the weather is cool and lingering for long and suddenly a heat wave hits! we feed the koi and the filters cannot keep up and are overwhelmed. a uv light used at this time, and a light feeding hand till the filter kicks in with the warmer temps can help. If the filter cannot keep up with 2-3 weeks of assistance than the filter is not big enough or designed adequately to do the job.
i do not encourage anyone to use a UV light continuously. It's an assitant to the filter and can also be used between 50 and 60 F to get parasite hatchlings.
|