Playsand sifted through a standard kitchen sifter.

They live on sand in the wild, they do not get impacted from just sand. They can however get impacted from Calcisand. I kept all mine on playsand, and so do the big breeders.

Caresheet found here if any are interested : http://www.lynnsbeardeddragons.com/caresheet.html

I know her personally and followed her setups completely for my dragons over the years. Works great!