I got a Blue Hippo Tang with noticeable Ich and moved it to my QT setup. It had scratched some of the color off face and sides when I got it and had noticeable white spots. I starting increasing copper dosages up to 2.25-2.5 over 3 days and soon after noticed the white spots leaving and fish looking better (more active and eating). The only symptom that I continue to see is it continues to scratch itself on the PVC pipe in QT setup. We are now on 14 days of copper in therapeutic levels and the behavior continues. I know I don't want to mix medications, but should I move to copper free setup and attempt to treat for other potential diseases/flukes/parasites, or just ride out the full copper dosing schedule?