ive decided to upgrade my biggest suclata, landfill into a kiddie pool i bought at walmart a while back. hes about 5-6 inches, and what i have him in now hes out grown. ive seen on the website sulcata station that they use for a substrate hay chopped up in soil. would this be the best substrate to use or should i stick to 50/50 of bed-a-beast and sand mix?