I hate to see this thread die cause it just kinda seems underrated.
I mean sure, what's going on here isn't glamorous but it seems to me that 4ozs a month from less than 400 watts of light is pretty decent. Especially if factors like lower electricity, lower soil/nutrient needs, easier drying/curing/trimming, lower heat, and prolly lower humidity. At 4ozs a month, one is looking at about 12ozs in 3 months.... Sounds like an decent average yield to me.
If I were to do this with larger plants in soil, we are probably looking at 2.5-3 months.... 6 larger plants yielding 2 ozs per plant and lets say a 600watt light would be needed due to the canopy of plants.
So if this could be tweaked just a little to get, say, 1.5ozs week from 400 watts, then we are like damn! That would be 18ozs in 3 months from 400watts... That's damn respectable!!!!!