One of the coolest aquariums I've seen.

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My guess is they filled the two tanks, used an air pump and a water pump to replace the air in the tunnel with water. It'd be pretty tricky I bet!
 
Okay, call me an idiot. How does the water stay up exactly??? Wouldn't it flood out of the tanks on the sides?

I think its like a vaccuum... like if u take a cup and put it underwater, then fill it completly up with water... If you turn it upside down and lift it out of the water, it will stay full until the very bottom of the cup actually hits air...

Hope that makes sense :/
 
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