Well just my 2 cents here guys. The Aquairum of the Pacific in Long Beach California has a couple of tanks and has not only managed to breed them, they have also been trained to eat FROZEN Mysis. They said it took about a year.
I beleave they sent the offspring to other aquairums and even some back to OZ to be put back into the wild.
Thier tanks are not overly huge proabably 6 ft tall and wide. That said, I ask about water and being an aquairum, they try to simulate changes in light and water temp to coinside with the seeasons. They have backup generators, seprate filtration systems, and just about every thing you could think of since we do live in earthquake country. I think they said they could run for a week without any outside power or food in the event of a major disaster.