Shoot, never thought of the mould thing. Humidity levels are 69 under the light, which is the cool end (82 F.) and 79 over the heat pad which is the hot end (87 F.) There is no condensation on the walls of the tank. Should I lower humidity? Thank you all for your suggestions, I'm a worry wort. I had a ball python in my youth but that was decades ago, husbandry (AND ball pythons) have changed. Who knew there would ever be so many morphs?