Yep, you could get a 10gal for $15-$20, and can pick up a 20long for about $25. I like the bigger tanks because it gives them more options to hide in different areas of the tank. I keep 3 adults in a 40long, and I just have the filter on one side, so they can get away from everything on the other side, if they so choose. Also gives you more places to put decorations, and hides for the animals.