I was thinking about the…friction that popped up between us and I've got an idea about how it came about. One is that I can be an obnoxious prick and I try to be very careful with my words. That's personality, work history (Army officer then programmer), and training but the bottom line is that I didn't "consider the audience". Mea culpa for that.
Perhaps the crux of the issue is "research". Reading pages on the internet and watching YouTubes can be considered "researcH" but what Shane is saying is not research. He's making recommendations and the recommendations that he makes are based on an unknowable set of factors. Given that, my perspective, is to accept that every recommendation you will come across is biased. I realize that to be inherent in human the human condition and that's why my preference for decision making is research rather than recommendations.
A couple of points - the folks at growlightmeter.com have improved their site quite a bit. I appreciate you sending that link re. autos. The last time I was in touch with the programmer, I asked him about the "new" graphic - the one that's there now - and told him that it was geared for photos but asked if he had a recommendation for autos. His answer was 45 mols across the board. When I asked if he had references for that, he said it was only the footnotes that were listed on the site.
OK, that's not research. He's passing along what it often bandied about in the industry and it cannot be cited as a hard fact because there is no research that can substantiate a claim that more than 38 mols is harmful. Will things work out really well eat 38? Absolutely. People have grown a lot of weed at 38 or 45 mols. There's no arguing that.
My take - show me the data! Below is a graphic from yet another Bugbee video. That's very powerful to me. In addition to showing yield, it answers a question that I had about flower vs the rest of "inflorescence". Specifically, "Harvest index" being the ratio of flower to inflorescence and that's a valuable metric re. crop quality. And is has pictures of colas that illustrate the how they tend to change as light levels vary. That info is data, not opinion.
Shane is not going to disagree with this study, which is just one of many sets of published research, but it's perfectly understandable that Shane will make a recommendation to grow cannabis at 38 mols because, per above, you can grow a shitton of weed at 38 mols - growers prove it every day - and, at that level, you have essentially a zero chance of having a problem.
On the other hand, I have incorporated data such as shown below and have jumped on the "high light" train. A mistake that I made was twisting your arm too hard in trying to get you on board. Sorry about that, amigo.
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