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7daysaweek
7daysaweekstarted grow question 5mo ago
What's the longest time without light they tolerate before major problems happen? Whats your experience? Thanks!
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Condocannibus
Condocannibusanswered grow question 5mo ago
Im new to the grow diaries. Last week3nd I turned my lights off for 48 hours. Turned them on 12 12 Monday today is Friday full flower power today is Friday. Net was 7 inches above canopy today 5 days later she's filling the net in. Do what green claws says it works I just watched the difference with my own eyes.
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Green_Claws
Green_Clawsanswered grow question 5mo ago
This is for @Gnrlymsntrp81 check this out, not sure who your talking about so here's the science behind my answer... The Science of the "Flip" ​"It’s not bro science; it’s photoperiodism. Flowering is triggered when Phytochrome Far-Red (P_{fr})—which inhibits flowering—drops below a specific threshold. ​In nature, this happens gradually over nightly cycles. By providing 48 hours of total darkness, you are forcing a rapid 'system reset' that crashes P_{fr} levels and causes the immediate accumulation of Florigen (the flowering hormone). You aren't changing the plant's genetics; you're just hitting the 'on' switch much harder than a standard 12/12 cycle does." ​Why it works (The "Quick Version") ​Phytochrome Transition: Plants track time using Phytochromes. P_{fr} builds up during the day and slowly converts back to P_r at night. ​The Threshold: Once P_{fr} is low enough for long enough, the plant receives the signal that 'winter is coming' and starts producing flowers. ​The Shortcut: A long dark period clears out the 'daylight' hormones completely, making the plant think it has missed the transition and needs to start blooming immediately. Check out my diary both the stick broccoli grew a few inch in 48 hour dark... There's 1 thing more damaging than bro science, is people who think they know science spewing out bro science. You 👀.. Peace out
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Gnrlymsntrp81
Gnrlymsntrp81answered grow question 5mo ago
That's bro science. Darknes=closed stomata=No photosynthesis= nothing will happen.
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squalino
squalinoanswered grow question 5mo ago
Hey there. I'm going to try to respond based on my experience. From my experience, a cannabis plant is much tougher than you think when it comes to total darkness, as long as it’s not repetitive. Here’s what I’ve noticed: 1. The safety threshold (24 to 48 hours) Personally, I've had power outages or timers fail for 24 to 48 hours. Result? No drama. The plant just goes into "pause mode." During the vegetative stage, it might stretch a tiny bit to look for light, but that’s it. In flowering, it’s even sometimes used (48 hours of darkness before harvest) to try to boost resin, so no panic for a day of darkness. 2. The real danger: Beyond 72 hours (3 days) That’s where it gets tricky. If the darkness lasts too long: In the vegetative stage: The plant might realize that the days are getting shorter and trigger an early pre-flowering. In flowering: It’s water and hormonal stress. The major risk is hermaphroditism. The plant panics, thinks it’s going to die without reproducing, and can produce "bananas" (male flowers) to self-pollinate. 3. The critical point: Humidity My real feedback is that lack of light is less serious than stopping air extraction. Without lights, the temperature drops, humidity skyrockets (especially in a closed box), and that’s where botrytis (mold) sets in on the buds in less than 48 hours. My advice if this happens to you: If you have a power cut, don’t try to compensate by leaving the light on longer afterward. Get back to your usual cycle as if nothing happened as soon as the power returns. Cannabis especially hates it when you change the time the light goes off! I hope I was able to help you a bit. Have a good day!
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Green_Claws
Green_Clawsanswered grow question 5mo ago
Oy ever gave 48 hrs dark and they don't bother.. I do this to flip to flower quicker.. It works trust me... Not waiting what can be weeks happens in days
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