Betta question? And snail question? plz help?

bowls are fine for bettas, infact they should be called betta bowls and not goldfish bowls. Bettas are air breathers so they do not require air stones unlike all gill breathing fish including goldfish. the snails are air breathers as well, they just store air in the shells. Yes they will breed and soon you will have thousands. I breed snails I got free from petsmart, I use them for feed for my puffers, and they breed like crazy. I started with 4 and have too many to count. You do not need to clean daily, and remember not to overfeed, they have stomachs the size of their eyes.