Okay, I thought of a couple more questions. XD

Is it okay to put a waterfall or water bowl in the tank? Are giant 'pedes prone to drowning? It didn't seem likely since they're so long they could lever themselves out, but I realized I should find out just in case. I was thinking of putting a bubble pool (shallow dish with an aerator) or a reptile waterfall in for humidity and aesthetics.

This is the waterfall I have:

http://lllreptile.com/store/catalog/reptile-supplies/backgrounds-waterfalls-cliffs-and-planters/-/exo-terra-medium-waterfall-with-pump/

Secondly, I've noticed people keep their 'pedes with other creatures. What mix well with 'pedes? I've heard roaches and snails, so far, is that right? I don't intend on getting any other critters right now, but I may be interested in the future.