I'm just wondering when I should move Sebastian to a bigger/longer tub. He has been in a 32qt one since I got him. I just had him out and he is about 3 feet long now. I know they are shy animals and like to feel secure in their homes, but should I go out and get him the next size up? I don't want to have him like crammed in there if that may be how he feels since he's taken off on a growth spurt in the last month or two.