'idk man,i really think sometimes you just over complicate things.so whats my "par disparity" as you put it if im vegging a plant under 216w of t5 and going straight to a gavita @800w ? because i do it all the time and my plants never skip a beat.and for that matter what do you blame when a grower vegges under 1000w mh and flips them under 1000w hps and his plants look like shit?do you ever chalk it up to the grower or do you have to blame the system in that case as well ? i would guess your new spectrum has more to do with it than light intensity does.plants under led require different nutes than plants under hid,i learned that the first run under a mars panel with a strain i have had forever.my point is you been playin in water for years now,constantly changing shit,nutes,lights whatever.only now do i see a decent looking leaf and your in a dif "substrate" which i never caught what you switched to.im not trying to be a dick but you would think after 3 or 4 years in dro you would have that part dialed in like 110% #1 rule or advice given in the noob grower 101 topics is dont change 10 things on every run or you cant get help or get your crop dialed in.i know from watchingyou through the years you love to tinker with shit constanly.all im saying is how can you say with such absolute that its def the change in lighting from veg to bloom? because to me thats the one thing a plant can adapt to like overnight.what they dont do well with is stuff like a jump from say 300ppm to 1000ppm in a day,and although they may eventually adapt to that feed change,your yields would most likely suffer alot.
my next question is why even use led if you are matching watts in flower while cooking shit,and having to bump veg power so much you lose any electrical savings you might gain in cooling costs?
i grew outdoors for many years before we went medical here.i always started my seeds under t12 or t8 floros and when it got warm enough outside i put them out in a field of sun,they did fine.i never bought into hardening off shit.i just wonder what my " par disparity" might have been in those days lol.
these lil fuckers were vegged under t5,never skipped a beat tossed right under hid.theres 2 of my helpers in there if ya look close haha.
first run under the cobs @ just 1050ma and i didnt put the reflectors on till the last week,wish i did it sooner since my lights were so high.but i cant complain,new strain new lights.i might of got more under the 600w that used to be there but i know my next run will be better with a known strain.bitches be hungry as hell under the cobs.
now i know to use more calmag,my feeds are weak @ about 450 to 500ppm.lesson learned i guess.