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assault with a deadly led i reckon

and in winter when humidity is zero is the worst with led ime and many others experience. plant killer. never happened under any other light it's all explained in the post i quoted above

i have. mh in blazing hot tent mid summer with no ac... plants grew just about stellar during veg, but the heat stress crept in in flower big time but most importantly the ambient temps were well over 27°C so nothing came out with any thc can corroborate on the led also, a friends tent is...

this is rollitup post i am linking to so no worries but here it is quoted: " The most nutrient issues we see with LED's are caused by a too high vapor pressure inside the leaves. With HPS/MH or CMH bulbs the optimal ambient conditions are 25-26°C and 50-55% humidity cuz the heat radiation will...

sure np read this

looks like a bad case of led to me

keep in mind the varieties that get those increases in yield from the 14L > 12L/10L have an increase in both thc (by 50% in the study) and flower mass, with the thc levels staying the same per flower and just a lot more flowers being produced

and also not to forget the cbd variety at 14L for 8 weeks went the opposite direction and greatly increased cbd/flower yield, with even higher daylight hours possibly further increasing cbd and flower yield i think it was like double or triple or something crazy for the cbd variety they tested...

the studies are only about flowering (actually the usa study does a bunch of other experiments also including poinsettia). but no dli or red light augmentation experiments in either study they did mention the fact that 4 weeks 14L + 4 weeks 10L = 8 weeks 12L which means that total dli is the...

these two studies are on light duration changes during flowering only

nope

they didn't test for d.l.i. no

would be an interesting experiment(!)

like i said, the 8 week is almost done, not quite. and yes, these same results would also apply to 'nicer cuts' lol don't try to flip this on some q shit please... yes, they did it correctly, these are university studies yes, each cut/strain was given all of the applications (mkay?). not only...

what's interesting is, the first study shows that the short daylight phase can occur either at the second half of flowering or the first. so you could start flowering at 10L or 12L then raise it to 13L or 14L for the second half, or go the more natural evolutionary way and start high and go low...

in case anybody else is wondering, the 10L/12L/14L means lights on hours

oh i most definitely agree, the 4 week photos are not up to my standards either, nor the 6, but then again, i let my plants flower for more than 4 and 6 weeks : ) the og is just about done though there at 8 weeks

these two recent studies compliment each other in an interesting way. the first one (video @17:03, usa) uses various fixed photoperiods to flower three different 8 week varieties, 10L, 11L, 12L and 13L the second study (article, australia) tests 6 or 7(?) varieties also of the 8 week flowering...

$130 hydrofarm mini sunburst 150w hps from canadian tire and a fresh 28L bag of pro mix omri certified 3 months fertilizer included organic soil (also from canadian tire) solved my led problems (kingbrite 4 bar 240w) for those in warmer and more humid climates i imagine the led would perform...