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Grow QuestionsLIGHT SCHEDULE? (Auto)

LIGHT SCHEDULE? (Auto)

WakeUpAndSmellTheGardenstarted grow question a year ago

What is the best schedule for a lumatek ats 200w pro in a 80X80x180cm growbox pls? (Autoflowers only) My plants actually growing not more than 35cm high with 18/6 light schedule and 100% light from grow to harvest.. need some hints. Sure there is a problem. Giving less nutri now

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Setup. Strain - Autoflowering

Setup. Lighting

Feeding. Other

Polyphemusanswered grow question a year ago

I musta missed your model# somehow.. i did the math for you.. pretty sur ei did this a week or three ago and said the same excat thing because the math doesn't change. 460 umol/s from that light is likely accurate. 460 / .64 = 720PPFD give or take 46.7 DLI is too much... If you keep an 18 hours cycle, drop light to 85% and go from there... observe and react to fine-tune. I wouldn't be suprised if you drop to 75% when it is all said and done. That is near 35DLI @ 75% power and proper hanging distance. again, the distance from canopy should be more about properly covering the area and that relates to geometry and beam angle. qbs should be 16-22" or so.. bar-framed lights with strips of LED can be closer around 14-18". Can you reduce power and get them clsoer? sure.. but then the depth in your canopy of quality buds will be reduced too. ppl get hung up on the wrong stuff.. closer does not equal better in all situations. more power and a little distance to compensate for a bit too much intensity at top of canopy will yield better due to impact of inverse square law and how light spreads out over distance from a source QB need more distances so that light can spread out a bit more from the source of a more concentrated distribution of diodes - alsoneed a better heat sink in that context too.. QB are a poor implementation of the mid-power diode.. they were a mistake from the start, lol.

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Selected By The Grower

QueenOfTheKindanswered grow question a year ago

Hi! I’ve been growing autos exclusively for the past 3 years. I use a Maxsisun PB4000 for a 4x4 tent. I keep it at 100%. Personally I’ve found that running the lights on a 20/4 cycle gives me the best results, anywhere from 2.5-5 ounces dried, per plant.

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Angus_MacGroweranswered grow question a year ago

Autoflowers are sold to remain in 18/6 throughout the growing period, so you should follow the breeder's instructions. Any other schedule and the haters are gonna hate (but you're allowed to play around, if you want to grow in 24/0 for example, that's how you learn). :3

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Polyphemusanswered grow question a year ago

bwahah i did give this answer 2 weeks ago.. you listened to the wrong person :P you are causing this problem with too much light. you can reference a leaf chart to verify leaf symptoms.. if you don't have any, you probably don't have nutirent issues. this is not and was not nutrient-related. Your plants were perfectly fine 2 weeks ago in the picture provided. If any small imbalance was there, it was not the cause of very short plants.. that's simply genetics and stunting with way too much light. After prolonged exposure to so much light, it won't fix itself overnight either... which means the autoflowers are fucked, because there's no extra time to be had. If you react more quickly to the stunting, it will recover faster next time. autoflowers have increased volatility when it comes to size compared to photoperiods, as well as a number of other traits that are much less consistent. if growing in soil, they will be even smaller. Growing in hydro/soilless can help, but then you inevitably get a lot of small, shitty autoflowers. The inconsistency is a big reason they are terrible as well as single-use. No worth in cloning them ... autoflowers are great if you cannot control a proper long-dark cycle for flower. That is the only reason to grow them.

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