1. you HAVE TO get all you fish to the QT and dose the COPPER POWER, quarantine the sick fish only doesn't help cuz ich had been everywhere in your main tank!
2. people who use ich-x is helpful, but you can't guarantee your coral will stay alive. coral is not compatible with copper AT ALL, even ich-x mentioned that is Reef safe.
3. you have to keep all your fish away from your main tank at least 2 weeks better 3 weeks, ich will die if they don't parasitic on the fish within 10-14days
4. make sure your hospital tank is keep on 82-83 degree, even 84 is OK, but make sure not over 85! It makes the ich grow much faster with that high temperature. After they grow up, they will drop from the fish body, and that is the prefect time to let the copper kill them all, but it doesn't mean you don't dose the copper before they drop from the body, just make sure your copper is stabilize with 2.5ppm, a bit higher or lower doesn't hurt the fish, but not over 3ppm