I posted here before about the possibility of my hippo tang having ich. I waited a week to see if the white spots returned and they have. altough only one of the two fish have spots, and he only has 2 spots on his whole body. Should I treat or wait it out a little longer?
Yes, treat. The waiting game does not work with ick....it only gets worse, not better.
Hyposalinity is the best treatment choice. There are many threads with info about the procedure. Post back if you need any help.