The Yellow Tang should have ample swimming room and be given ample amounts of seaweed/algae to eat to insure health. While they will readily accept meaty foods a varied diet is recommended. They are constant surveyors of the tank and spend a lot of time swimming around looking for food.
With time they may nip at corals (mine does occasionally, but rarely), I will offer a sheet of nori on a clip and that usually appeases his coral appetite.
I simply can't trust people that don't like bacon,