I'm kind of new to the mommy BP thing, but we have our hatchling in a 40 gallon aquarium with a large hide rock, and hide log, and a water dish. Its still really easy to clean even thought its such a big aquarium and with the reptibark I use, the moisture stays in very well. I'm not sure about a bigger hide though. Maybe make one out of clay and bake it so that it is solid. This way you could make it perfect size for you bp's.