I am getting a dwarf puffer soon and I have a 2.5 gallon tank that I'm thinking of breeding snails in. I just don't know what kind I can find easily in pet stores around here, I know Petsmart has Mystery snail, but can DP's eat them? I don't plan on putting much of a filter in it just a small one if any is needed. No heater because the heat of our house keeps it warm enough I think, tell me what you think. I can always buy a really small heater, I have the money. I just don't know if they make one small enough. Do I need to put gravel in it? What should I feed the snails? How do I know females form males? And how do I get them to breed? Thank you for all those who help.