Ramshorn snail

I just picked up a Ramshorn Snail yesterday and after I got it home
I noticed the shell was pitted and kind of disolved but did not
fall apart when I picked it up. It looked like a shell sitting in
soft water for a while.

Question is, will the shell repair itself in time? My water is hard so there
should be plenty of "stuff" for the snail. Shall I return imediately?

And yes,, the snail is alive and moving. Waiting for it to eat all my spot

BTY, anybody in the Los Angeles area with some Malaysian Trumpet Snail?