Turn Candlestick Park into a giant aquaponics farm

I know, I know that I made a pledge not to talk about wild renderings. But I couldn't help it this time.
This one is wild, but with a little tweaking perhaps doable?

A couple of weeks ago I saw this urban farming design to retrofit Candlestick Park. (Paul McCartney's concert in mid-August was the last scheduled event.) What will happen with it now?

Who knows what the price tag would be for something like this. Astronomical, I am sure. But something should be done with it soon, did you see how the Silverdome looks after 10 years of disuse?

 

In 1975 the Silverdome cost $55.7 million to build, which is roughly $245 million in today's dollars, according to Deadspin. In 2009, it was purchased at an auction for $583,000.
Such a shame.

Something should be done, and fast. I think the second picture is key. It's going to be expensive to retrofit and the urban farming is a great idea, but what about if we could make it half as expensive? By that, I mean make the stadium a huge aquaponics operation. The floor is a fish farm and then the water can be pumped up into the stands (where the plants grow) and trickle its way back down.

Sound crazy? Not when you consider shopping malls have spontaneously become fish ponds already! Here's one in Thailand where someone introduced a small population of Koi and Catfish.

What do you think?