QT Multiple Fairy Wrasse with Cupramine

[Akrite]

I'm upgrading to a larger tank and have decided to treat all my fish with Curpamine hoping to have a new ich free tank. I added Curpamine to an established 40 gallon QT hosting 5 fairy wrasses, taking twice as long as the Curpamine directions stated. All but one is doing well, of course its my most expensive wrasse (Lineatus Fairy Wrasse). Its not eating or moving very much.

So my question is what do I do?

Take it out of QT and put it back in my old tank and try again once I'm done treating the rest of the wrasse?

Do a 50% water change on the QT and if that helps slowly add the other half of cupramine until i reach full dosage?

Do a major water change, removing all tank water with established tank water and start all over again just much slower? Or something else

 

[Akrite]

No one has anything to say.

 

[Deinonych]

Lack of appetite is a symptom of copper sensitivity. If it were me, I would stop Cupramine treatment immediately and begin removing it from the water (via water changes or an adsorbent like Cuprisorb). Once the medication is removed, I would ensure all fish are eating well. I would then use the tank transfer method (TTM) for prophylactic treatment for Cryptocaryon (ich).

I personally have moved away from chemical treatments for Cryptocaryon and use TTM followed by several weeks of observation.