HELP HELP HELP with yellow tang

[Zoaelite]

Possible solutions for curing Ich include Garlic, Copper treatment in a quarantine tank and an increase in Aminoacids/Proteins in the diet (Ich really only affects fish which are stressed out and are lacking the vital slime coat that protects them from infection). Of course you should treat the underlying problem promptly, I dont know alot about your system but if there is more than 1 tang in a tank smaller than 150G right there problems can arise from the natural territoral aspect of the Acanthurus species. Not to act as the "Tang Police" but does this not specificly show that any type of tang in small tank will be more prone to infection?
Levi