i would actualy have to agree that it isnt a good idea to do freshwater dips on corals, fish, or anything else saltwater. It can remove parasites, yes, and it can kill other thigns which make the fish unhealthy. But the problem is, whatever is wrong with the fish is usualy not jsut on the fish, but in the water. sometiems if you can remove the problem form the fish or coral, it wont come back. But i dont personaly believe that a freshwater dip is the best way to go about doing this. Often times (especialy with fish because you ahve to catch them), a freshwater dip will jsut stress whatever it is out even more so it has a harder time recovering. I have done iodine dips though and that seems to work. It can also stress out whatever it is (ive done them on sps), but they usualy recover okay.
i dont recomend them, but if you do them, i woudl at least try to make the pH as close to yoru tank as possible....
sorry, dont mean to confuse anyone, but it is jsut my opinion
:dance2: