Thank you for the information!!! I do know where they are about, and I will pour some water asap!!
Yes, I know they are on their own time schedule. It is just really stressing me out because I am having to have them babysat for about two weeks and they won't get their sand changed out then, and also I don't want to have to draw attention to the fact that I have hermit crabs in college when I'm not supposed to, so I really need to be able to change out the sand when I'm on break, which won't come until September....
If only they knew, I'm sure they'd come up.