Went to my LFS a couple of days ago and saw a really cool crab, and didn't do enough research and bought him. after putting it in my tank I read that they need air much like fiddler crabs, but there is no way I can get a spot in for him to go up and get air. Can't return him cause the store I got him from didn't have a spot for him to come up for air either. so he's screwed both ways. wondering if I can catch him every couple of days and let him walk around on top of the tank lid or something for a couple of mins, any other suggestions would be great. Thx!