congrats on the additions! remember that even though they do live in dry areas they do dig in the ground where they stay during the day and it is nice and humid in these burrows. so do use a humid hide, especially while the leos are in shed.

i would not recommend sand as substrate under any conditions, no matter what type of sand it is. here is my own reason why: http://www.ball-pythons.net/forums/s...ad.php?t=45900.