I just recently bought a beautiful purple tang. Ive placed him into my 60g copper tank for qt procedure. About 24 hours later, he was covered head to toe in white spots, almost like salt. I’m familiar with ich, but not 100% sure if this is ich or velvet. He’s still alive, and had the spots for almost 6 days. All of the fish at my lfs i got the tang from now has these white spots just like mine. They told me it’s ich, but i’m not too sure. What do you experts say?