I may be new to snakes, but I've never understood why people seem to think the bare minimum (or close to it) is "the best" for the welfare of the snake. A 55 gallon, which measures 48x13x22, is not that much bigger than a 20L, 30, or 40. 20L is stretching it, but the rest are fairly close... I'm trying to make this tank as natural as I can. I find it hard to think that just because my tank is a little bigger than most, I'll have a stressed out snake.