I don't know when did I do the math(possibly under the influence
), but wood-grid SIL hood isn't 390W, but 252W:
Original design assumed all SILs to be 11W, which wasn't possible at the end.
Actually purchased bulbs were
10 x 11W 2700K = 110W
6 x 15W 5000K = 90W
4 x 13W 6500K = 52W
Actual draw from the wall:
Actual watts per sq feet: 35W per sq feet
Kalichakra 195 grams
Beyond the Brain #2 126 grams
Beyond the Brain #1 73grams
Total 394grams, 1,6GPW.
I don't trim small sugar leaves specially if they're full of trichs. Remember this is for my own use, but even with a thorough trimming job, say 10% less weight, GPW is still >=1.5.
One thing is for sure: SILs, when used with a suitable technique (strain, LST, even canopy, etc) is the most efficient lightning for growing, no doubt about that.