I purchased two tangs the other day from a guy that I was get my fish from. The fish looked ok till the next day and some ich popped up, I did not stress and started feeding them garlic food mix like I always do. Well two weeks later and a few fish lighter, my others have it. My percs, tangs, Flame Hawk, Basslet all have ich. Some even show a couple of black spots which I guess are also ich. I am very ticked off at this ! Now what do I do ? I even saw that a Firefish had it 5 minutes ago. I have a 20 gallon tank empty in the shed that I could put copper in but I doubt they would all last in there any amount of time. So any idea guys ? If I tear my tank down again I only want to do it once. From now on I am going to go back to the "two week quarantine" like I used to. But for now any suggestions are wanted.