Help please. I currently have in QT a baby regal tang, a yellow wrasse and a tomini tang. They have been in there for 2 and a half weeks. Last Wednesday I treated with fluke solve as regal was scratching a bit. Seemed to improve a little till yesterday, when he was constantly rubbing. I reluctantly did a FW dip. He made it through a bit upset and has eaten this morning, but he does look like he has some spots. And looks pale and awful! just spotted both the wrasse and tomini rubbing. I have cupramine available to treat, but I used seachem prime last night, I know I can’t use both products together!! I don’t know what to do! Can I get enough prime out with a water change to safely use cupramine? Also fluke solve says it remains in water for 3 weeks? Is that an issue?