A pic!
The temporary tank he's in now is a 2.5 gallon. It's one of those 12" x 6" glass boxes that comes with a glass lid from PetSmart. As you can see, there is natural pea gravel, lava rock, and then just behind the crab, you can see that green thing, which is a tank decoration. It does have access to air and dry land. I am also in the process of making a floating island from 2 wine bottle corks tied together with Java moss tied to it.
The crab will soon be moving to my empty 5.5 gallon. I am waiting for a 20 gallon long from someone, and I am doing the tank shuffle again. The 20 long is for 5 juvie Apistogramma hongsoi. I am also getting sand for the 5.5 gallon so the crab will have something to dig around in and to sift.
The crab has been eating shrimp pellets so far.