^^An extension to Connie's advice, do NOT place a heatmat on the bottom of the tank -- only on the side. (Scorpions burrow to escape heat, so if it get hotter, they burrow deeper, then they get hotter still . . . and you can guess what happens.)
Regarding
H. arizonensis, I never see mine since she made a nice deep burrow. She too has become a pet hole; she was only out and about before she dug down to the bottom of her tank.
Cameron; in addition to the caresheet you were linked to, here's an emperor scorpion FAQ that should answer just about any question you may have about these guys.
>link<_________________
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