30 gallon
No, I would think that a 30 gallon would be fine. Corns do get to be a pretty decent size and a 30 gal. is really not all "that" big. While he is a baby, you may want to just consider a plastic shoe box though. This would be more for your convenience than your snakes though. Easier to find a hatchling buuried in aspen chips in a small box rather than a big one, ya see what I mean? Hope that helped a little.