New Blue Tang has Ich, how to Treat?

[aquajeep]

i oddly enugh bought a marine beta and got a deal on a yellow tang years ago that had ick in the store.i brought fish home and each time droped the salinity down to 0.018 even 0.017...it worked great.luckily i had no coral back then.ive never quarentined a fish.stresses em out more i think. guess i would have to now though..crap i should get a quarantine tank lol