Hey, I'm not planning on buying a betta tomorrow or any time soon. I'm working on my first tank, 20 gallon. Which it would not go in. I was thinking of getting 1 betta once my tank is all established and running smoothly. I would buy a different tank for him. As in much much later down the road. If you search the web I find lots of different info and was just wondering what you guys think the best size for a betta is? Iv heard 5 gallon min, 10 gallon min and larger. What do you think?