I have my fish in quarantine due to an ich outbreak and all of them are doing fine showing no signs of ich after three weeks. I also purchased a copperband and finally after two weeks he’s eating everything but yesterday I noticed either fin rot or maybe him being nipped. My copperband is on a separate quarantine with only a mccoskers so I don’t think the mccoskers would bully him but to be safe I removed him yesterday and put him with my other fish. Should I use maracyn with cupramine just incase it is fin rot? Any advice would help and my yellow tang has also developed it looks like lymph around his whole body. I don’t know how cause I do 10% water changes everyday and make sure the water is clean @Jay Hemdal @vetteguy53081