PerroVerde
Well-Known Member
So my best harvest under 400 cob watts in a meter squared area with 16 plants from clone, purple kush x blueberry cross in coco / 940 PPFD was a little over 20oz of high quality bud. That comes out to 1.4 gpw or 1.89 ounces per square foot... it can still and always be improved on...Here we are 13 posts deep and everyone is talking about PPFD and wattage.
Bigger than your light source is your plant genetics. Every plant is different and each pheno is different. Under a 600w CXB3590 setup in a 4x4 area, I grew 1.2GPW total (not including microbuds garbage pile, and fully trimmed not this half ass bullshit of weighing on the stick with fan leaves still intact like many do around here). In that setup, I had 6 plants. One strain is known to yield more and it sure did almost by 75% more. If I grew the same strain throughout, my yield would have potentially been 1.5gpw or even more.
GPW (really your total grow weight) can be used to measure the differences provided you utilize 2 grows comparing different light sources but thats about as far as it goes. It really is a poor measure of how well your garden did. One guy can grow with 1000PPFD with a low yield strain and another grow with 500PPFD with high yield strain and they come out even. So who did better?
Stupid....
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