So my wife and I are watching a documentary about Disney's animals and aquariums so naturally I was intrigued by the aquarium portion and apparently their "tank" is 5.7 MILLION gallons. First off I'm jealous and my second thought is, how do they make that much salt water ?? Is it filtered sea water ? Or do they use Millions of bags of Instant Ocean? I tried looking online and couldn't find anything, so I'm hoping someone on here knows ! Thank you in advance ! And sorry this isn't a direct discussion about my or your aquarium, just really curious !