i think you misunderstand their natural habitat : )
"living on sand" would mean, like, sand DUNES. and that is not where they live. "desert" does not automatically mean sand. they live in soil.
and the good Dr. Z Rider is right, whatever you put in there is going to be mixed up and a mess regardless. you are trying to reinvent the wheel. don't worry about it being pretty to your eye.
once you have a good workable, usable, diggable soil, it WILL be pretty to your eye, because you will see it as a natural tool that the animal can use, and you will appreciate it for more than visual looks.
using a good soil is a "simple" approach, one that works well, and the animals can breed in it. it is proven. accomplish that first. once you have put time in, learning about what makes a good soil, at that point you can venture out and experiment (if you still have the desire). but start with the simple way first, not the hard way : )
best of luck.
-----
robyn@proexotics.com
Pro Exotics Reptiles
