Q.>
I have a 4000 gallon pond that is 10 years old. I have always had clear
water using a UV filter and plants and shade. Now the trees are gone near
the pond and it sits in full sun and the water is green green all year long.
what do I need to do to manage the green water?
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A.>
I see you have been using a UV already and the only difference now is the loss of the trees. Have you replaced the UV bulb? Although they still emanate a light, the UV rays are generally ineffective after one season. I would recommend replacing the bulb or adding a larger unit.
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