Hi FF i have an 36'' x 18'' x 12'' tank that i picked up at a thrift store for $10, at first i wanted to put a ball python in it but without the sliding & locking lid i don't feel that it would be too secure. This time Ive planned to tip it on its side and make it a tank for arboreal herps, the footprint when on its side is 18'' x 12''. i might do the great stuff method and definitely add live plants.