So, I'm wanting to get snails for my tank I have and the one I'm getting, but I was also wondering about raising snails in a separate tank. Would a 1/2 gallon be a good size to start. I'm thinking pond snails here so they wouldn't necessarily need a heater. Yes I know I'm crazy, and perhaps I didn't learn my lesson ages ago - but they are sooooo cute. I don't think I would risk a population over run in my betta tanks by putting them in there - I'm thinking apple snails for those - But are apple snails easy to breed, and how would they handle a small tank with no heater?