You could put him in a hospital tank again, to fully recover, but the problem is that each time you transfer him back in the main tank, he needs to re-eastablish his position in the pack, which may cause new injuries... No matter if you isolate him again or keep him in the tank, it'll always be a bit risky.
I think (hope) he will be fine, though, and wheter you use salt or not, that tail should be ok in about two, I guess.
I think (hope) he will be fine, though, and wheter you use salt or not, that tail should be ok in about two, I guess.