I currently have a gem tang in a QT tank being treated with copper and Nitrofurazone due to what I believe is/was velvet. He seems to be holding on but wasn’t looking hot. Velvet (I think) killed my white tail and 3 of my bimac anthias. I didnt want to “finish off” my gem with a freshwater dip. Now that he’s somewhat stabilized should I FW dip or don’t bother. Thank you for your input. This is the worst I have ever been hit, sucks….