Hi all so I realized last night my bicolor foxface has something all over him. I'm pretty sure it's ich or some other external parasite. So since it's a FOWLR I'm treating it with coppersafe. Initially I put it in a half dose because I didn't want to shock the fish, plus I've heard some fish like triggers, tangs, and puffers are sensitive to copper. I have all these fish, do I still want to do the full dose(5ml-4 gallons) on my tank or should I stick with 3/4 dose so I don't stress out or kill my other fish with a full dose? Oh and how long should I wait to put the remaining amount in there?