I have a strange thing happening with two of my fish. They have what for all intensive purposes seems to be ich. The weird thing is it COMPLETELY disappears off their body overnight and as the day wears on the spots appear. Is this common? I've never seen ich that is basically non-existent (the outward spots anyway) in the morning, appears throughout the day and then disappears again overnight. This process has been going on now for about 5 days. It's a pretty distinct cycle that seems to be affecting both of them the same way. They are both eating a ton and are swimming around freely (not flashing at all). It's weird.