I have been raising colubrids for a number of year and recently acquired some ball pythons to add them to the production. I have not used an incubator with the colubrids, I simply set the eggs in Vermiculite in an egg box close it and set it on a shelf until it hatches 65-80 days later. Everything I read on Ball Pythons keeps referring to incubators. Are they a necessity for python eggs to hatch?