Three of my fish have fin rot, may be starting on a fourth fish. I would just quarantine and treat, but qt tank had bacterial bloom because of a bad batch of salt. We know it’s the salt because we tried the same bag after our first bloom and it is what caused the first one as well. Main tank is good, but I have inverts and nems. There is a fifth, unharmed fish in my tank. She is a Blood Orange Misbar Clown and her name is Kingpin. I do not want her infected. Do you have any advice to help me treat these fish without harming my inverts? Remember, I have qt tank but it is in bacterial bloom. It is also a new tank, only purchased on Sunday.

