I run 120 plants under my 9 600 watts.
What I do in the first 4 weeks is have them in a 3x10 area under 4 600s and then I move them to 9x7 area under the 9 lights. I don't to top them but my next round I have half that I have topped to see if I can do better yield wise.
I have been thinking really hard about making a bunch of smaller grows where I never move them. I would make my 9 light area into 3 3 light areas using 3x8.5 areas.
With my Urkle I'm on a 4 week harvest and I keep it that way so I have 12 a year. If I broke my areas down to smaller sealed areas I could harvest every 2 weeks.
I like your system because of the numbers. I like a lot of little plants instead a few big ones. Electricity cost way too much to veg for very long.
Oh by the way you inspired me so much I got some ogr og seeds a few weeks ago.
I will post some pictures tomorrow of what I have going and what I want to do.
Last run (test run) I did (1) 3x6 tray under (2) 600W and (1) 3x3 tray under (1) 600W.
It turned out uber dank so I decided to do a whole room of it this round.
GTD, it's (3) 600W that I got 5.5 lb. the last run, but as far as 600W goes, I've gotten 2.25 lb. off (1) 600W. with SOL Donk. Been doing the E/F setup for years now.
Also I've been running Doubled's MPB for about 6 months now and ran into a few problems.
Going to switch over to UC as it's a much easier setup. Only wish they have bigger modules, like 20 gal. at least.
I have been doing this a long time and don't know how I can improve it.
I don't have air cooled reflectore, co2, or a/c.
I have big exhaust and intake and just deal with the heat.