I got a tank today from my uncle. It's 37X18X17 with a wire mesh top. Im looking to build a desert type habitat for scorpions. I have an emp in a different tank so I know how to care for them. Any suggestions as to species in relevance to care, temperament, and toxicity? I live in florida and I havent ventured into any species besides the emps. Also any suggestions on substrates and types of rocks for hides?