Help. My oscar scratched himself, and looked like he was healing, but then the damage spread, got fuzzy, saw some spots, thought it was ick. So i raised the temp to 87, added salt, and have been changing about 20% of the water every other day. He looked much better fie a few days. Now he looks awful and I don't know what to do. His appetite is off, though he still eats some. Any advice would be appreciated.