I am starting a new round of copper in my QT. If you think that they fish are healthy enough, you can bring them up to ride the blue wave with my firefish and chromis. A full QT cycle in copper works pretty well if it is done right. Formulin is pretty good for a dip, but that won't rid you of the issue. You are pretty much where you are with the display, and I am sure that you figured out.
I have a ton of thoughts being from out of town and most the LFS around here and how they keep their fish. I will keep these to myself, but I will say that most can do better about disease prevention in their own systems. Perhaps I was just spoiled before and this is more normal.
If you want more responses next time, work the title as "Cheap ZOA Frags," "New $50 LEDs" or "Sea Clone SP40 Pump - $60 Group Buy."