Sorry to hear about the losses.
Update on my Tang.
He/she is doing well. Spots are gone.
Treatments as of now have been 3 days in nox ich 1.024 sg
Move to hypo salinity tank (1 hour acclimation)
Penicillin for 2 days
Move to previous tank, cleaned and fresh hypo 1/2 hour acclimation
another move to 15 gallon qt with hypo
Treated with eurythromicin
Next week I will move back to the hospital tank, start raising the salinity. (probaly use copper safe)
The only real stress I noticed was usually after water changes, and after netting (only had to net once)
What I am guessing is this fish came from the fish clearing house healthy, picked up the different problems, was still bagged when I bought it.
Ich, fin fungus, and a bacterial. Three separate things, then stressed some, and was more susceptible.
He eats algae wafer, and red seaweed. Seems to enjoy trying to get food off the glass and filter pipes.
Now just hides when I approach, but comes out relatively soon if I just sit still.
Overall seems to be a great little fish