I was dosing per the instructions, which I actually dosed less than they suggested. The copper dosage was per 4 gal of water and I dosed for 40g instead of for 45g of water.
When the fish seemed too start stressing from the copper I immediately began to do water changes to remove the medicine. That night in fact I changed 10g, then the next day performed a 20, 10, 20, 20, day after that another three 10g changes.
I have not tested for the copper, do not have a copper testing kit. Would assume that by now all if not most of the copper is out. I also started to run carbon the day after putting the medicine in.
$450-500.00 lesson learned. (Lessen one, QT for two to three weeks and not 3 days. Lesson two, dont treat copper to wrasses)