So I have a clown and a YWG who recently survived brooklynella and were treated with reef rally and metro while in QT. They were doing well for a week or so but now my clown has small white dots on her again. I have cupramine and was wondering can I treat the tank with that? Or will it harm them? **they are still in the QT due to the DT running fallow** they’ve been in quarantine for 2 weeks.