I was thinking about getting a puffer, probably a green spotted or figure 8. I have heard they have to eat snails regularly or their teeth grow out too big (kind of like rodents, I guess) Can you keep a steady supply in the tank or will the ouffer eat them all and make you get more? Do you have to run a separate snail tank? Are there snails that will survive and reproduce in a brackish tank? What types of snails are best, any old kind?

I want to learn everything I can before I buy anything. Any info you have is welcome.