ok, i have had these two clowns in a 10 g quarantine tank for about 2 weeks now, and i was dosing with copper for about a week, then i stopped because another fish that was in there died even though he looked fine, so i thought it might be the copper, anyways, i just started dosing copper again yesterday at a lower dosage, and now the smaller clown is just laying in the bottom of the tank breathing rapidly. they were being treated with copper because of ich. what can i do to help him out?