All Sulcatas and Leopard tortoises I have raised and am still raising(about 10), Grow fast and smooth in their indoors winter hot humid closed chambers. I toss them in the hot dry yard over the summer months and they practically stop growing. Diet does not change. I am going to get sprinklers on a timer for this coming summer and have them go off a few times a day. So I think humidity and hydration is very important.