As I promised, here is a picture of the "experiment:
It's a real simple setup. The channels are 10ft each. The stock tank has fish in it. Water is cycled through 12hrs on/12hrs off with a 285gph pond pump using a timer. The water returns to the pond by gravity feed and provides aeration for the fish.
I'm not sure how the plants will do in the heat in the greenhouse. I previously used a misting loop and a fan for evaporative cooling, but that left a lot of calcium residue on the leaves of the plants I'm hoping that the plants will prosper by simply keeping the roots well watered and cool.
It's real difficult to see, but the channel in the foreground has tomato plants that were started from seed. The back channel was seeded with peppers, but I haven't seen any growth so far.