hes doing well. its holding nicely. i added alot of crushed coral to the filter for Ca and he's growing a nice thick shell so hopefully he'll eat well and grow enough shell so pass over the hole
Watch out for the pleco. They often try to suck the slime off the snail's foot, trying to get the protein. As long as the pleco isn't causing problems, your snails should make a full recovery.
Good luck! Keep us updated.