Michael,
This could be ich. Ich is almost always present with fish and only
becomes a real problem with the fish are under stress.
Continue doing your water changes to keep Ammonia low. Make sure that
the water you put in is the same temp/pH as the water in the tank.
This will minimize stress on the fish. I wouldn't raise the water
temperature as it will do little good. However make sure you are
completely vaccuming the gravel when you do your water changes. This
will suck up the ich parasites that settle in the gravel until they
become water born.
Stop by FishGeeks and post this in the health forum for more
suggestions on what to do.
Sean
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