Will my yellow tang heal on his own?

[Frenchie]

I just got a yellow tang and introduced him into my display tank. He's now showing some tiny white spots (only a few)... I think it's ick. I only have a few other fish in the tank currently. I can't catch him as hes in a 230gal with lots of live rock. He is eating well and does not seem stressed.

All water parameters are good.

CAL 400-420
ALk 9.0-10 DKH
NO3, NO2, Ammonia all at 0

My question is, If my water quality is good, can he fight it off with no other treatment?

Should I do something else? UV?