thats just going by my cab - which would be about the same space as one of your modules. i use 4 x 3-4 gallons in that space and yield well.
VG about how often do you have to water in an average temp week (not sweltering or freezing)?
I don't want to lounge in there with the plants, but I don't want to struggle to care for them either, because eventually you get tired and it all goes to shit. Last run in my micro cab I kinda gave up and the buds cured on the plant. It was just too much trouble to open the damn thing.
Next size down is 20 gals (20"x 14.5")
then 15 gals (18"x 14.5 tall)
then there is the 100 gallon version (38" x 20") - that would be just one pot, one looooong veg, but I do have a switchable HID and I would like to see a good veg under CMH....
hmmm.....
resinryder, according to your logic the slowest growth of all would occur outdoors. It's just not the case. Roots colonize and branches grow simultaneously and in proportion, not in succession.