Critical Purple Kush - VPD FTW

4/30 - everything is going great. No bugs. No burnt or turned up leaves. Just pure green and happy buds. PPFD 760 across canopy, still no CO2 and I won't attempt it this grow, humidity still in check and rock solid using the vent fan to control RH. Probably harvesting before summer humidity, so I can probably avoid any dehumidifier use. Might dial it back depending on bud density, but I'll cross that bridge when I come to it. For now, trying a new, non-fishy, nutrient mix that goes against most of the accepted science for flower phase. N:P:K:Ca:Mg:S is 200:60:130:65:33:41 that I'm slowly ramping up to 1.9EC. Here's the study I'm working from: https://www.frontiersin.org/articles/10.3389/fpls.2021.764103/full Time will tell. This study mentions that the inflorescence dry weight was directly proportional to the size of the plant, so bigger plant = more trichomes. Nice, BUT, it also mentions that the high N, high growth plants had 20-30% lower THC concentration. So instead of a 25% THC killer, you might get 19% THC bud, but a lot more of them. Theory is that the lower N fertilizer rate (like most 1:3:2 or 0:3:3 regimes) cause nutrient deficiency stress, and plant stress = greater cannabinoid production. OK, so what if we take the best of both worlds - max growth with the 10:3:5 ratio, combined with a different source of plant stress. In this study on plant stress vs. cannabinoid production (https://journals.ashs.org/hortsci/view/journals/hortsci/54/5/article-p964.xml) they use drought to stress the plant, without affecting growth or inflorescence dry weight, increasing THCA and other cannabinoid production 43-50%. The timing of the drought cycle relative to induction of flowering is crucial, and they started their drought cycle at week 7 of flower. So, should I try drought-stressing these bitches in a few weeks? Stay tuned, oh, and maybe I could get one freakin' like from all y'all? I'm pretty chuffed with this newby grow :) 5/2 - EC to 1.82, pH 5.5, PPFD to 950