If you don't want multiple different sized racks personally I would try putting the little guys in the 41 qt with several hides not all young ball pythons have problems when in a larger enclosure but if you do have issues with them eating and your temps/humidity are correct then you will probably need to move them in to a smaller tub or some how Devide it into a smaller tub. I have had several of my hatchling bp's in 16" x 48 " cages that I built and they eat like champs and are growing fast they are all 600+ grams now and still no issues yet..