My valentini puffer has been breathing fast for over a week. Today he is even worse. can't find anything on him other then his Lymphocystis which comes and goes and is just a very small spot on his upper fin. I don't know if he has a new disease or if its due to the problem I have been having with my tank. My urchin, mantis shrimp and dartfish all died within a week of eachother. So I knew there was a prob. Took water in everything was fine except a ginormous amount of copper that seemed to have magically been introduced to my tank some how. After much detective work we came to conclusion it was because of the metal wire brush my husband used to scrape a couple rocks that have hard hair algae on them over a month ago. perhaps some metal broke off in rocks?. However if it was truly copper that was registering on the test the fish should technically be fine and all my coral and hermits would be dead as well and they aren't they are doing well. So we are thinking it might be some other type of metal showing up on the test. my angelfish and long nose hawk seem perfectly fine so I don't know what to think for sure, so I would appreciate any advice and thoughts on maybe a disease it could be or even how to handle the mystery metal problem. Currently we have a phosphate reactor running to help algae prob, the media says it helps get metal out. for the past 3 Weeks we have done 50% water changes cause we were trying to get rid of phosphates to help hard hair algae problem. The latest large water change was sat when we found out we had the metal problem. Also added the media cuprisorb to hang on filter to help absorb the metal.