Alright, I'm way too excited about this. I had to meet my dad halfway between home and my school this morning to switch cars, and I figured that I'd stop by the LFS just to look around (famous last words) and discovered that they had Nerites! So I had to pick one up - he made the hour-ish long drive exceptionally well and is now acclimating to his new tank.
I did notice when I got back to my dorm that a small piece of his shell has erroded - is this something that can be corrected with high pH (my tanks are around 7.6-7.8), clean water, and a high calcium diet, or is the damage permanent? If it is irreversible, is there anything I can do to help him?