I am new here, but I did a lot of research before I got my dragon. I have read on most sites that sand is not good for non-adult dragons (not full grown), but reptile carpet is fine for all of them. Apparently, the young ones will eat some of the sand with their food and then potentially get impacted bowels, which can kill them. I have my new guy (about 8 weeks old) on ceramic tile (because I happened to have some the perfect size laying around) - I was going to use the reptile carpet until I found the tile.