The plant sites are 12" apart on each tube, but alternating hole patterns between tubes fill in the gaps. I decided on 12 b/c i figured since the tubes are right beside each other with no gaps they might need a little space. Plus this is my first grow, I was watching your 66 on the sidelines and figured this was the way to get a good harvest for a good price.
I noticed that a good amount of light was getting through the pvc and since its j pipe which is pretty thin I light proofed the top with black duct tape. I have a white reflective roll of plastic that i'm going to drape back over the top of the pipes around the plants.
I was going to build it with 6 at first, but decided to start with 4 and next time around do 6. I'm using the botanicare line of nutes right now. There is just 200w of MH light over the top. I'm going to mount my 1000w MH as soon as I have at least 20-25 healthy plants in the pvc system.

mothers
clones
I'm just pretty much waiting on nature to speed up
