I bought a lipstick naso the other day at petco and briought it home, I did some tests on my qt tank and the parameters were terrible so i acclimated him to the main tank ( I know I shouldnt have) I went back to pertco the following day and both fish that were in the tank with it were still in there dead. Now the other day I came home and the nasolooked as if it were shedding or peeling and looking terrible, I got it out asap and within hrs it was dead. NOW I have two yellow tangs in the tank and one of them looks like his skin is peeling and breathing heavy.. What is this I cannot find anything on the net! He is eating, should i remove him? are all of my fish going to get this?