Hey Yeah, I took some pics but they didn't show up worth using so I will take some more tomorrow and post so you can see it. I run mine in hydro so I have the 10gal totes with w 2 holes in the lids of each and have 4 totes in 1 tent, so that makes for 8 plants which I am hoping will fill out into the space and grow a bit to nearly fill the space while leaving enough spacing between branches for good light penetration.
In my other tent, I have 3 plants in a row at the back that are in organic and then 2 totes, 1 on either side of the door, each with 2 plants. these 4 are in hydro. I like to form a "U" shape with my plants so that the opening of the U is facing the entrance to the tent. This makes it somewhat easier to get in to service the system resevoir, which sits directly in the center, and tend the girls as needed without killing my trashed back.
I found that I made a mistake with placing the organic trio at the back of the one tent because it has made it difficult to get to the plants for watering and tending.
I would say that if you are working in soil then having 4 nice plants in 3-5gal pots, vegged to about 2-3' tall depending on how much they stretch, and Fimmed/LST to make them bush out well, then set equal distant in a square formation within the tent (5x5) would produce very nicely under the 2 lights.
I am using the cooltubes in my tents because I like for them to spread the light out a bit and overlap each other so that plenty of lumens get to the plants from 2 different directions. So far I have found that works best for me. I have them tied together with flex hose and pulling air out of the tents through the lights and into the ceiling of my building where I have a 530cfm vortex for each tent.
Here is the one tent with the organic trio under the screen for bud support. This is looking in from the side window of the tent. The 4 plants in totes are Blue Mystic: