Don't they get too big for such a small tank? Granted, whips, tailless or not, aren't something I'm well versed in, but just looking at the size of some of the ones at the con makes me think it'd need a bit more space, otherwise it'll just be stuck on that bark.What about Amblypygi? I think they like high humidity and vertical space. Just put a cork slab for them to hide behind during the daylight hours.