Message #532500

[Tusk Hog]

  Copper sulfate and karmex in large amounts will kill the moss to the point it will take the oxygen from the water killing the fish. It can be used in small amounts to kill moss in just small areas a little at a time. My suggestion would be to go to Tractor Supply and get the pond dye, Blue Bayou and Aqua Blue are two of them. The dye will gradually kill the moss keeping the fish safe.