Advertisement I picked up 15 Arizona bark scorpions some months back. Considering the distribution and varied habitat, I did not put them in a desert setup, but a wooded one. As babies need humidity, I put in a good deep substrate, varying between three inches and six or so inches, and tons of bark and hiding areas. The 20 gallon long tank is heated with two external stick-on heaters, one on the side, one on the bottom. Temperature is maintained at between 78 and 82, and humidity varies in the tank - 80 and up in the soil, 40 and up in the upper area. It all depends on when I last poured a bottle of water into the tank. The soil is kept moist at the lower levels - I want humidity for the young, and places for adults to go to escape it as needed. The sloped up back is filled with cork bark and tunnels, holding up the dirt. You can see behind one of them - plenty of hiding areas. The skull is a real deer skull, also offering hiding areas for the young. Plenty of leaf and bark litter also help maintain humidity while offering hides for young and prey. The pine cone to the side is like a condominium from Hell - it's filled with babies down in the leaves. Crickets are ALWAYS kept in the tank, to help prevent cannibalism. If I don't see crickets, I add some more tiny and small ones. Some of the crickets have grown to the point where they have laid eggs in the soil, as well. Crickets are fed as needed, Flukers orange, to prevent them from preying on baby scorpions, and to keep them healthy. There are also isopods in the tank, not sure which species, but they do their jobs. So far, I've had at least seven broods, that I've seen. Chances are, I've had a few I missed. My initial 15 has grown to a population somewhere between 75 and 100. I don't separate mothers with babies, but leave them to do their thing. Eventually, I expect to up my 20L to a 55 gallon setup. ETA: I periodically very carefully use an endocam and take a peek in the tunnels and hides. Attached are four pics I just took, showing two different mothers with broods, and a few randoms. At the moment, I have at least one other mother with a brood, also.