Hello everyone recently I went down to the lfs and picked up a powder blue and a tomini tangs. I temp acclimated for about 15 minutes or so let them drip get use to all the water parameters got them all settled in for the night. Lights off didn’t think anything of it and went to bed. Went to work the following day and when I came home and in the room to feed everyone the tomini was toast and the powder blue seemed to be doing okay but wasn’t interested in food. Also want to add in I have a purple tang so I figure he was going to bully a fair bit being the biggest in the tank. Fast forward a few days powder blue still isn’t really interested in eating and I noticed some white spots on my purple tang and the powder blue but purple was doing good eating like a pig still but somehwhat slow with his behaviors. Following day after or current day I come home and notice the powder blue has a lot more dots and his side seems to have a white strip in his body almost like a tiger strip going up. Need help identifying what it is and what treatment I can do to hopefully keep these guys going strong. Have my old 30 gallon breeder from recent tank upgrade I can use as a qt/hospital tank but never have got into that process that. Tia love you all <3