Blue Hippo Tang keeps getting ich.

[Bugger]

How bad is the infection? Some white spots are not always ich

[Piscez]

Sounds like more a of a stress issue, I have 6 tangs which most tangs are prone to getting ich my hippo gets it almost every time I add another fish lol and usually goes away and never infects the other fish. The fish you have aren't prone to ich I'd leave it with the community and let it recover on it's own power