The 12-12 From Seed Thread

Frank Nitty

Frank Nitty

Well-Known Member
Kassiopeija said:
"What Does 12/12 Lighting Mean?
The 12/12 light cycle means 12 hours of light and 12 hours of dark. The normal light cycle is 18/6 for plants. Using the 12/12 light cycle stresses the plants and has a few desirable effects for the grower. One is that it can force flowering and make the plants sex female. The 12/12 light cycle is done in a grow room.

Maximum Yield Explains 12/12 Lighting
The 12/12 lighting technique makes the grow period last 7-9 weeks. This method eliminates the vegetation stage of growth. It can help some growers conserve in space and time. Using a 12/12 lighting technique from the start means that plants will start to produce flowers as soon as they start growing. The lighting pattern is similar to that of the end of the growing season and it tricks the plants into thinking they need to start flowering."

Goodbye from Maximum Yield

In print and online, Maximum Yield is your source for cannabis and cultivation knowledge, with informative grow articles and tips to enhance your life with mmj.
www.maximumyield.com www.maximumyield.com

:lol: :wall:
Click to expand...
Does it really work like that
 
Lenin1917

Lenin1917

Well-Known Member
Kassiopeija said:
"What Does 12/12 Lighting Mean?
The 12/12 light cycle means 12 hours of light and 12 hours of dark. The normal light cycle is 18/6 for plants. Using the 12/12 light cycle stresses the plants and has a few desirable effects for the grower. One is that it can force flowering and make the plants sex female. The 12/12 light cycle is done in a grow room.

Maximum Yield Explains 12/12 Lighting
The 12/12 lighting technique makes the grow period last 7-9 weeks. This method eliminates the vegetation stage of growth. It can help some growers conserve in space and time. Using a 12/12 lighting technique from the start means that plants will start to produce flowers as soon as they start growing. The lighting pattern is similar to that of the end of the growing season and it tricks the plants into thinking they need to start flowering."

Goodbye from Maximum Yield

In print and online, Maximum Yield is your source for cannabis and cultivation knowledge, with informative grow articles and tips to enhance your life with mmj.
www.maximumyield.com www.maximumyield.com

:lol: :wall:
Click to expand...
They still take a few weeks (3ish)to hit sexual maturity before they start flowering doing 12/12 from seed but it’s still a fun and arguably useful way to save a bit of time and space.
 
H

harris hawk

Well-Known Member
running 12/12 with/in flower lighting woeks well for sativa's (100%) and even with regs - they show sex faster in 12/12(from seed) with flower light that using 18/6 from seed FYI
 
Opie1971

Opie1971

Well-Known Member
Kassiopeija said:
"What Does 12/12 Lighting Mean?
The 12/12 light cycle means 12 hours of light and 12 hours of dark. The normal light cycle is 18/6 for plants. Using the 12/12 light cycle stresses the plants and has a few desirable effects for the grower. One is that it can force flowering and make the plants sex female. The 12/12 light cycle is done in a grow room.

Maximum Yield Explains 12/12 Lighting
The 12/12 lighting technique makes the grow period last 7-9 weeks. This method eliminates the vegetation stage of growth. It can help some growers conserve in space and time. Using a 12/12 lighting technique from the start means that plants will start to produce flowers as soon as they start growing. The lighting pattern is similar to that of the end of the growing season and it tricks the plants into thinking they need to start flowering."

Goodbye from Maximum Yield

In print and online, Maximum Yield is your source for cannabis and cultivation knowledge, with informative grow articles and tips to enhance your life with mmj.
www.maximumyield.com www.maximumyield.com

:lol: :wall:
Click to expand...
That’s horse shit
 
MAGpie81

MAGpie81

Well-Known Member
Star Dog said:
Some nice results from @xtsho and @Lenin1917 they sealed it for me.

I think it's perfect for pheno hunting I'm only looking for a tester so there's no need for me to be veging potential mothers, the option of cloning or re vegging are still open.
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Sounds like a time-saving strategy for sure. I’m interested in the results, but at the same time I wonder if you lose a lot of potential data to use in selection by not allowing a longer life cycle. Every “event” whether caused by natural causes (pests, solar/wind disturbance, etc.) or intention (LST/HST) leaves an imprint in the genetic “memory” (yes, this is a thing; epigenetic is the word, I believe) causes changes in how the plant grows and what it passes on generationally, right? But then, I suppose the upside to a quick life-cycle would also be eliminating some negative factors from happening and thus narrowing it to mostly controlled or “favorable” genetics.
So, to me, this only really seems like a good technique for indoor growing. Also, though, I like the idea for single-generation isolation of particular phenos/genos. bongsmilie
 
Opie1971

Opie1971

Well-Known Member
MAGpie81 said:
Sounds like a time-saving strategy for sure. I’m interested in the results, but at the same time I wonder if you lose a lot of potential data to use in selection by not allowing a longer life cycle. Every “event” whether caused by natural causes (pests, solar/wind disturbance, etc.) or intention (LST/HST) leaves an imprint in the genetic “memory” (yes, this is a thing; epigenetic is the word, I believe) causes changes in how the plant grows and what it passes on generationally, right? But then, I suppose the upside to a quick life-cycle would also be eliminating some negative factors from happening and thus narrowing it to mostly controlled or “favorable” genetics.
So, to me, this only really seems like a good technique for indoor growing. Also, though, I like the idea for single-generation isolation of particular phenos/genos. bongsmilie
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It’ll take at least 85-90 days at the min. to finish up some of quickest strains/phenos. So pretty much the same amount of time as some autos. Clones of photoperiod plants are the quickest route by far.
And in my experience, about everything that flowers fast will have looser, not as dense buds.
 
G

GrowBoxBudGuy

Member
My last grow, my second since a 20 year hiatus, was a 12-12 grow after a short 3 day sprout/veg period... Average days to harvest from germination was 111 days... For the first grow I veg'd for 2 months and had an average days to harvest from germination of 151 days - which doesn't qualify as 12-12 from seed... These were with unknown bag seed...

My current third grow, also bag seed, sprouted and veg'd for 11 days on 24/0 before switching to 12-12... By day 22 I was already monitoring one plant that was already sexing Male... By day 24 the other two plants had sexed Female and the Male was culled... I think the seeds were Autos due to how fast they sexed compared to scores of other grows - even with clones... I'm gradually bumping up the lights due to the Autoflower component, and at day 41 the schedule is 14-10 and will increase to 16-8 and then 18-6 over the next few days... On day 36 I added an AK 47 Auto Fem into the grow box and, by my calculations, all three plants should finish at about the same time... We shall see...

I was sold on the 12-12 from seed as soon as I read this topic and got started with the last run... The next few grows will be Autos but I'm sure I'll go back to Photos at some point... I've mentioned elsewhere that I have always run a 2'x2'x4' grow box - originally with Fluorescent's, then HPS, and now a screw-in LED panel with 6 - 14W 1500L 2700K and 3 - 15.5W 1650L 5000K bulbs with diffusers removed...
 
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