also re: sheet moss i usually put that in areas that have desert sand, hard clay soil (“excavator clay”) - like for my GB gopher snakes, at present, there is a bottom most layer of substrate that’s a 50/50 mixture of raw peat and sand with cocofiber + repti-earth mix 70/30 on top and in some spots clay soil + desert sand mixtures 80/20 on top of that - the purpose of which to create an environment in which i can easily raise the humidity at night and then have that easily gone during the day like what happens in the Great Basin - cocofiber easily absorbs moisture while at the same time easily gives it up also (that’s why it’s not preferable for tropical enclosures)