Is my fish ok?

The situation is I have a Naso Tang ( Very Samll) that I bought from Ac&C two months ago. Anrew treated him for a couple weeks with copper then had him in fresh saltwater for a couple weeks. I took him home and placed him in my QT set-up (33 Long, HOB, Led's, 600 GPH Power Head). I have had him in there for two weeks and I'm doing a 5 gallon a week water change. I also used Dr, Tim's Bacteria to get the QT set-up going. He eats fine and will eat anything I put in the tank but he hides out all day and shows white stress spots when I enter the room. I'm nervous about putting him in my display tank so I was going to fresh water dip him and another 14 day copper treatment. Is he stressed enough from being treated and moved around so much? Should I just continue to QT him and watch his stress level? Should I copper treat him again?

 

No other tank mates right now but could add some too. I have dipped his food in garlic but seems to eat everything. Should I copper treat some more or just add a few anthias and see how he does.

 

Just fed him had white stress spots all over and when he ate the food they went away. You think I should just put him in the display tank and that will make him not stressed as much. I don't whats going to change leaving him in QT.

 

Thanks for the advice

 

I put it in the display tank and he seems a lot happier. Yellow tang accepted him well. No stress spots at all today and he is swimming all over. Being with a lot of tank mates and a good home must of helped.