The tank should not be smaller than 10 gallons. If you plan to ever have two or three emperor scorpions in the same tank, opt for a tank that's 15 or 20 gallons.
[header] How to care for emperor scorpions [title] House your scorpion in a terrarium or a fish tank. [step] The tank can be made of either glass or plastic, but needs to be sturdy and well-ventilated, and should have a secure lid that latches shut. Emperor scorpions are strong and can lift a lid if it's not secured.