Hello. I bought the copper sulfate crystals to control FA the guy at the store told me to mix it with water to get it really concentrated. I put some in my 1/4 acre pond a week ago and it dont seem to be doing anything to the alge at all. I have been raking all FA off the top. It just comes back in a couple days. I was just wondering how long it should it take to see a differance.
thanks to everyone.
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