snail rams horn

I recently got a black ramshorn snail, which eventually turned to 10, then 20, and now I have several. I've decided to breed them for hobby and I have a gourami that eats them as well. They are colors such as black, leopard, and a very light brown.. If I decided to raise these, would people be...

Need some snails for my Congo puffer and my lfs is too expensive. Anyone have a bunch they can get rid of cheap?