my tang has been fighting ich for a while now. Ive been treating with a reef safe medication but that was a waste of 22 bucks. now he has small dark blue spots on him and some white spots. This is worrying me that this is something other than ich. I dont have a quarantine tank yet but am relizing how important the are to have. I was going to give him a fresh water dip but I can't catch him. Any tips?