So I have a Qt tank. It have ich so I decide to went fallow for about 60 day+. After the 60d over I put all my fish back and turn out there is ich in the tank again. So I took all my coral out my dt and rock to another dt tank for coral only and I throw copper in the tank that have ich in it. I'm planning to keep the fish in this dt tank from now without moving back and forth anymore. How long should I leave the copper in this tank so all the ich, parasite can die out
