Kole Tang

Well I have been told they fight it off. But when my yellow tang & hippo tang got it I used ICH-X in a qt tank I set up. Did that for 1 week BAM! ich free lol
You can try that just take out every fish that has spots and treat them, Good Luck

 

They do eventually grow some degree of immunity, but there's nothing surefire about that, and it's only a 6 month deal if they end up with a full immunity.

Even if you put them in a QT and killed the ich there, you (extremely likely) didn't get rid of the ich in your DT (if they were in there) because of the 1-month lifecycle nonsense. It's why nearly every article says to treat for however long, and keep the DT without any fish for 6-8 weeks.....

 

Well do what you feel is best for you that's all I can say now :-/

 

I have kept a few bristletooth tangs over the years. IME, when a B tooth won't eat prepared foods, it usually does not live too long, even in a big enough tank with enough LR and room to support it's non prepared diet.