http://elasmollet.org/Cc/Cc_captive.htmlGreat Whites have been proven to be impossible to keep in captivity in any size tank. Any electrical equipment will affect their electroreceptors which is how they hunt and basically know where to go/find food. They can sense even the smallest of interferences. No Public Aquarium has even kept one for any period of longevity.
pretty cool detailed list if your interested/backs up what you said