I believe Arapaimag's tank is in Canada. His build thread has some info that would be helpful to anyone thinking about taking a mega tank on: http://www.monsterfishkeepers.com/forums/threads/building-my-50-000-gallon-monster-mega-tank.8952/
The Shedd is in Chicago, IL...it gets cold up there.
It's doable, but you'd have to be prepared to spend an enormous amount on temp control.
The cost to run mega tanks is crazy. This poor guy had to tear his tank down because his electric bill was too much to handle: http://www.practicalfishkeeping.co.uk/news2014/uks-biggest-private-freshwater-tank-is-closing-down
Not trying to rain on anyone's parade, but just sharing some facts about what it really takes.
The Shedd is in Chicago, IL...it gets cold up there.
It's doable, but you'd have to be prepared to spend an enormous amount on temp control.
The cost to run mega tanks is crazy. This poor guy had to tear his tank down because his electric bill was too much to handle: http://www.practicalfishkeeping.co.uk/news2014/uks-biggest-private-freshwater-tank-is-closing-down
Not trying to rain on anyone's parade, but just sharing some facts about what it really takes.