I think your toadstool has an infection. When you cut away the infected dead tissue make sure you go well into the healthy part of the toadstool. Kinda like a bruised fruit. You cant see it but the infection goes beyond the obvious necrotic tissue.
After the surgery, youll want to do a dip outside of the DT. Maybe even do a QT setup if you can. I would pick from these medications. Ive never used it but medicoral sounds like some good stuff.
Brightwell Medicoral - probably awesome but ive never used it.
Coral RX - i use it and works good
Lugols - made by a few brands. I have brightwells version.
Dip per instructions. After you do the dip youll want to do a rinse. Then the coral can either go back in the tank or into a QT tank.
After the surgery, youll want to do a dip outside of the DT. Maybe even do a QT setup if you can. I would pick from these medications. Ive never used it but medicoral sounds like some good stuff.
Brightwell Medicoral - probably awesome but ive never used it.
Coral RX - i use it and works good
Lugols - made by a few brands. I have brightwells version.
Dip per instructions. After you do the dip youll want to do a rinse. Then the coral can either go back in the tank or into a QT tank.