Silicone.

it was built by http://go.to/interamerican/

Starphire glass, 720 gallons, and plenty of gadgets to go with it.

His protein skimmer alone cost some ten thousand dollars.

He says the tank costs him a dollar a gallon a month for electricty.
 
Yeah, Slip, like that except not so big- 8'x2'x2'.

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This pic's a couple months old, and it's from the "pretty" side (as opposed to the "business" side), but it's basically the same thing.
 
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