This may be old hat to you, but just in case (you only get one chance to do it right with hatchlings) be sure they get lots of Calcium, as they are growing at a phenomenol rate. I use ground oyster shell and clean white eggs shells, they eat it up. Also cuttle bone and Calcium rich foods. Mine like Opuntia cactus. I have a couple of bunch grasses that are damp underneath, and they spend the days there...no pyramiding, and the damp area is probably preventing pyramiding. Good luck, Vic