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yep, my kingbrite is garbage compared to the hps i got at crappy tire : ) and sunblaster cfl bulbs apparently lol happy growing

i'm glad there are inlet ceiling leds in the apartment so i can photograph the radical improvement in plant health since switching from led to hps : ) leds really are good for something eh!?

new plants are much healthier with the hps than the led wow the ambient light when looking from outside the grow is noticeably brighter than when the led was set at <20% (the highest the plants would allow). also it looks more like a mini sun is hiding in the closet as opposed to some lights

good thing about tents is the outside is well protected from powdery mildew : )

I'm at 43.5°N Ontario and using hid (hps for now)

in enclosed grow spaces thc/cbd production starts a steep decline at 27°C and up in 1994 in a dry concrete townhouse basement with a 1000w mh on the ceiling we had newly planted thai seeds sitting on the floor growing lush dinner plate sized fan leaves at just a few inches tall

i just got a 150w hps from canadian tire to replace my kingbrite 4 bar 240w led and the hps is more yellow yes but it also is more sun like and warm than the led with the led the plants crap out if the dimmer is over 40% and the humidity is too low (and winter is coming here so forget that...

canadian tire saves the day eh! 150w hps for 129.99 (click link). my only climate control is to grow my two crops per year at favourable seasonal times (spring and fall) so it's back to hid for now...

that does make sense now that the 240w in 2x2 is oversized considering my situation and also that 420mag thread i linked to on the last page someone says: "I checked the intensity of led lights with a lux light meter and the led had twice the intensity of the 250w mh at 25% power." apparently...

that's a lot of helpful information there thanks everybody : ) is magnesium also gypsum? i have some on the way from amazon, and is mentioned in that thread i linked and used by many of the members there the light is quite bright still even at 40% i mean it grows sticky buds in good amounts...

this was the healthiest growth that i achieved under this light it was early spring 2022 direct exhaust coming in from outside 43.5° north latitude ontario so the weather was warming up and humidity was coming up. the max these plants could take was 40% dimmer. i believe i could get the dimmer...

if so few google results reflected real og finishing times then it would be more likely the og tested was of the shorter flowering type also the gist of it is like, if 10/14 etc has this effect across multiple strains then you would have to assume that the plants that are noticeably further...

i might get some gypsum also. i haven't given up yet on the led i did get a crop of clones to fill the tent super healthy (at 40% dimmer) a year or two ago check this before and after from just a top dressing of gypsum to an led burned plant...

i am realizing yes that humidity and temps are more of a factor with led than hid thanks for mentioning this and also someone has reported the need to let the soil get near bone dry before watering. i just won't be able to compensate with winter coming. a friends grow was very robust and lush...

promix moisture mix omri certified it has 3 months fertilizer in it. i have used it before in flouro, hid and sun and it is good soil

ok... googled og kush and scrolled the first 30 or so results and on average i would say the flowering time "ACCORDING TO GOOGLE" (ron burgundy voice) is 8 weeks : )

thanks for the replies everyone this is really an interesting conundrum. on another forum having the same discussion what i think i know now is the rh really needs to be bumped up with led's which i will not be able to do in this closet grow heading into winter. also gypsum/calmag apparently...

ya me too that's why this thread is about led's not flouros or hids here is a quote from the following thread which explains the situation: "The highest recommend distance on the website was killing my plants. 3 different strains all very healthy until placed under this led light and returned...

i am not about to go cross eyed so i'll just say that he did mention the finish time of sunset (8 weeks) and the pictures are at 6 weeks and he said anything higher than the 10 hours group would not be as quality a FINISHED PRODUCT he concluded from all the testing that after all is harvested...

oh it most certainly is the light, and it's not just me this is not uncommon all good though i found the sweet spot where the plants will be fine and for this strain it is with dimmer all the way down. last time it was dimmer at 40% just bump it up above these levels and boom like clockwork...