They're fairy straightforward inverts. I keep a group of 4. For a single scorpion a 5-10gal tank is fine, floor space matters more than height. Provide 4-6 inches of substrate, I use a 50/50 mix of cocofiber and organic potting soil, as they enjoy digging burrows. A few pieces of cork bark work well as hiding areas. Give a shallow water dish(1/2-2in deep for adults), and if you want to add plants or logs you can, but they aren't required. Mist the substrate in order to keep humidity at 60-80%. Temps are best in the high 70s to low 80s. I feed crickets once a week to adults.