<a href=showthread.php?s=&postid=13291295#post13291295 target=_blank>Originally posted</a> by jnc914
I agree with your statement. Copper is not safe for all fish. I just had an issue with Cupramine use, which is considered a very mild copper, with Butterflies and an Achilles Tang that are in QT. They exhibited lethargy and labored breathing to the point that I did a water change in the hopes they would not die. After five minutes of adding new water they were back to normal. I have a Tinker butterfly pair coming from Hawaii and I don't know what I am going to use as part of their QT. I will likely do hypo along with Prazi for 4-6 weeks and will definitely not be using copper.