The kiddos got an upgrade from the 3 sqft aquarium I was sold as adequate, but I didn't, nor did the reptiles, believe it was after some time. This is more of a playland design for them with four large slate covered hideouts for them to excavate yet also easy for me to access. Probably over an inch of sand around all the slate structures, if they like it I'll upgrade the other cage below it to match with playsand.

