After laying it out thoroughly in CAD, I will not be able to cover enough space left to right. I would have to really make a light consisting of 5 pieces. A center piece and four "islands". One in each corner.

I figured a 90 degree beam spread at 6" above the plants. Making it a 1' diameter footprint per LED. It would take 13 red LED's to cover a 3'x3' space leaving little room to waste. There would be three reds on each island and one red and two blues on the center piece.

I'd need to use 5 fans, one for each sink, but they are cheap. In my head it's kind of like a chandelier.....

Anyone have any feedback on my idea? Is there an easier/better way to accomplish lighting a 3'sq. area?