I have loads duck weed in pond ive tried usual chemicals which have minimal effect. I have Koi & Goldfish which i know nibble on it. I have cleared it only for it to reappear. Anyone got any idea to get rid of.
Keep clearing! It think it's one of those things that you just have to stay ahead of in a pond, if the fish aren't clearing it out. Do you feed your fish? If so, maybe stop and let them clean house!
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