My garter (about 2 feet) is in a 20 gallon tank, I don't think this is large enough to house him. I'm interested in building a decent sized light weight enclosure for him. I was planning for the base, and 3 walls to be plywood. The front wall to be some sort of plexiglass door and the top being a screen to provide ventilation. Does 3ft long, 2 feet wide, and 2 feet tall sound like a good size? and maybe being able to house another in there well? plenty of hides etc.. How does this sound to all of you? No, I won't be using under tank heating pads, just an overhead light if anything. Although I've kept him 2 years without any heating like that..