hi all
i have a serious problem after adding 1 kg copper sulfate (cuso4) to 100,000 liters of water .the water becomes gray and foggy !! pleas help if you know how i can solve this problem.is there a way to oxidize or decrease the amount of CUSO4?
it should be mentioned that, the sand filter is new working fine .
don't you think AlSO4 would help ?

best regards