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10 hour light cycle
- Thread starter mofreak
- Start date
MAZEinaHAZE
Member
never heard of that.......i have heard that 72 hrs of pure darkness right before chop -- during flush -- will help boost trichome production. NOt yield and weight, but tri's
mandi paige
Member
if you want to mature your buds faster and get less yeild, then you can do 10/14 . never tried it but i hear it works 
ButteredIt
Member
I've heard you can do this. My plants weren't finishing in their 7th week, so I cut the light back to 11/13. They are now in their 10th week, and they are still not ripening. Not sure how valid this idea is. And no one will post in my other thread so maybe you can coax some answers out of the more experienced...
rmccinc719
Member
sounds pretty hokey to me. i've heard it mentioned before in the past. but most of those people didn't know there head from there asshole about growing. i would also like to hear some real world data on this subject. good ?
Well maybe I can help, I have only done this once so this is give or take. I have done this method, and for me, it worked out pretty well. I went from 12/12 to 10/14, untill about 4-5 wk of flower then went to 8/16 for the last 2 wks during flush. It works , but yes you will suffer a lose in yield for sure. But if Ina hurry, and don't care about yield then try ot out. I'll say this I'll never do that again, atleast not ever that extreme again, maybe 11/13 or at the most 10/14. I hope this helps out.
Good luck
Good luck
yes, done all the time...
flower @ 11:30/12:30, too... watch the hairs increase...
16/12 cycle
https://www.icmag.com/ic/showthread.php?t=108613
enjoy your garden!
flower @ 11:30/12:30, too... watch the hairs increase...
16/12 cycle
https://www.icmag.com/ic/showthread.php?t=108613
enjoy your garden!
'Dont do it unless you have to!!!!!!!!
'Dont do it unless you have to!!!!!!!!
Hey dude,
I'm quiet surprised more people ain't telling you that 'YES' you can do this, it will make the buds mature quicker, but my friend it is also known that upto a 30 % decrease in yield is more than likely(depending on when you do it - of course!!). I'm sure Jorge Cervantes mentions it in a couple of his Canna Bible's, too risky IMHO!! Hope this helps dude!!
(i believe this method produces loser and more airy buds too, hence why i have never done it- i would not like to lose density, not to mention light stresses, one would have to know the favourable light requirments of each paticular strain or risk self'ing it)
Be-Lucky.............Scroger'
(Interesting link Mistress)
'Dont do it unless you have to!!!!!!!!
Hey dude,
I'm quiet surprised more people ain't telling you that 'YES' you can do this, it will make the buds mature quicker, but my friend it is also known that upto a 30 % decrease in yield is more than likely(depending on when you do it - of course!!). I'm sure Jorge Cervantes mentions it in a couple of his Canna Bible's, too risky IMHO!! Hope this helps dude!!
(i believe this method produces loser and more airy buds too, hence why i have never done it- i would not like to lose density, not to mention light stresses, one would have to know the favourable light requirments of each paticular strain or risk self'ing it)
Be-Lucky.............Scroger'
(Interesting link Mistress)
no, will not decrease yields by 30%... how did this # come up?
nor will fruit be airy & loose... not certain that density is a product of light regimes... maybe carbs & type of light (mh...). how did this ill-effect become attributed to 14hr nights? please detail data...
there should be no light 'stress'. nature has 10 hr days in many parts of world @ different times of yr... why would plants 'stress' on 14hrs dark?
during last few days, they only get 8/16 in imaginary garden...
may not be for every gardener though... does require some degree of understanding how plants respond to light/lack thereof & dark... temps also influence plants... they distribute much of the energy created+stored @ night, so higher night temps also increase metabolism & thus the translocation of this energy...
lots to this... this may be helpful:
Finishing times, Photoperiod, Latitude, and how it all works!!
enjoy your garden!
D
DHF
Plants flower and swell lights off and produce resin/trichomes as a defense mechanism lights on........Plant`s spittin new white pistils either have too much N left in their leaves/reserves during late flower or are caused by being too close to the light source IME......
Peace.....DHF.....
Peace.....DHF.....
Hey Mistress',
Ok, i am gonna go have to go off and try n' find the data for you now(LOL), or see what i can find related to this issue, from all the lit & books i have ever read, a longer dark period will most definately contribute to YES, UPTO a 30% decrease in yield, and airy Buds', unless ofcourse i have read this wrong or missunderstood it like a thousand times, i was always led to believe this anyway(Thanks Jorge). If what you are trying to say is true then why do we use 12/12 anyway, why not 16-12 from the start or 18-12 for that matter, of course i have never tried doing this as i never wanted to lose anything potentially. I think if Jorge Cervantes has stated this in one of his books, then the information/data would have came from a reputable source, ie- a canna lab i presume. I have been at this for a long time and have always believed/presumed this to be true. If you can shed any light/data to the contrairy then please teach this old dog some new tricks, i would be very grateful after-all, by the way i do very much respect your opinions on many issues i have seen you bring to light across the board. (If you are correct on this issue maybe you should consider writing a Canna Bible-LOL) I'm always open to learning new stuff. I'm paticulaly interested in what you have to say on the Canna Boost Vs Mollasses thread, facsinating, and you have put up some nice links there too!! I will be watching. Just before i go, is it not possible that after say an 8 or 10 weeks of a 12/12 light cycle, you suddenly switch to a 14/10 cycle and 'POW'-you got nanners! I do know that some strains are light sensitive and will hermie from a sudden change in light cycle- Do You Dissagree? & if so why?
Be-Lucky & Always enjoying my Garden LOL'-Peace......Scrogerman' xx
(DHF-RESPECT!)
Ok, i am gonna go have to go off and try n' find the data for you now(LOL), or see what i can find related to this issue, from all the lit & books i have ever read, a longer dark period will most definately contribute to YES, UPTO a 30% decrease in yield, and airy Buds', unless ofcourse i have read this wrong or missunderstood it like a thousand times, i was always led to believe this anyway(Thanks Jorge). If what you are trying to say is true then why do we use 12/12 anyway, why not 16-12 from the start or 18-12 for that matter, of course i have never tried doing this as i never wanted to lose anything potentially. I think if Jorge Cervantes has stated this in one of his books, then the information/data would have came from a reputable source, ie- a canna lab i presume. I have been at this for a long time and have always believed/presumed this to be true. If you can shed any light/data to the contrairy then please teach this old dog some new tricks, i would be very grateful after-all, by the way i do very much respect your opinions on many issues i have seen you bring to light across the board. (If you are correct on this issue maybe you should consider writing a Canna Bible-LOL) I'm always open to learning new stuff. I'm paticulaly interested in what you have to say on the Canna Boost Vs Mollasses thread, facsinating, and you have put up some nice links there too!! I will be watching. Just before i go, is it not possible that after say an 8 or 10 weeks of a 12/12 light cycle, you suddenly switch to a 14/10 cycle and 'POW'-you got nanners! I do know that some strains are light sensitive and will hermie from a sudden change in light cycle- Do You Dissagree? & if so why?
Be-Lucky & Always enjoying my Garden LOL'-Peace......Scrogerman' xx
(DHF-RESPECT!)
dont really recall the 30% loss of fruit in the books referenced... though have not read that book in some time.
w/out a direct quote & resaons why the decrease would occur, can only presume it to be the decrease in light receved over that period of time...
or,
2*56=112 hours less light under 14/10...
well, yes, have started 16/12, then gone to 12/12, then 12/16, then 8/16...
no, not for those that may not want to lose a plant, or for a plant to hermie... not that this will occur, but dont want to be cited for stating its 'standard'...
does require some familiarity w/ specific cultivars & careful lighting schedules...
yes, c*nn* has labs, & there are many reputable gardeners in the world.
much of the fundamentals are very covered... but there are many, many techniques that are trade-secret, advanced techniques, &/or are new innovations... or old novel approaches.
photoperiod & light response by plants still has many unknowns; even if have labs.
& if have labs... should be pushing boundaries & doing all kinds of experiments...
*mistress* by no means knows all. but have ran different light regimes... light angles, shading, kelvin temp of lights & photoperiod all are factors... temps also factors in flowering... decreasing light definitely can decrease final fruit ripeness by 1-7 days. angles of light may affect foxtailing...
c*nn* boost v. molasses is still ongoing... fruit uncured for final exam...
enjoy your garden!
w/out a direct quote & resaons why the decrease would occur, can only presume it to be the decrease in light receved over that period of time...
or,
2*56=112 hours less light under 14/10...
well, yes, have started 16/12, then gone to 12/12, then 12/16, then 8/16...
no, not for those that may not want to lose a plant, or for a plant to hermie... not that this will occur, but dont want to be cited for stating its 'standard'...
does require some familiarity w/ specific cultivars & careful lighting schedules...
yes, c*nn* has labs, & there are many reputable gardeners in the world.
much of the fundamentals are very covered... but there are many, many techniques that are trade-secret, advanced techniques, &/or are new innovations... or old novel approaches.
photoperiod & light response by plants still has many unknowns; even if have labs.
& if have labs... should be pushing boundaries & doing all kinds of experiments...
*mistress* by no means knows all. but have ran different light regimes... light angles, shading, kelvin temp of lights & photoperiod all are factors... temps also factors in flowering... decreasing light definitely can decrease final fruit ripeness by 1-7 days. angles of light may affect foxtailing...
c*nn* boost v. molasses is still ongoing... fruit uncured for final exam...
enjoy your garden!
Hey Mistress,
Interesting response and thanks for the sharing, i thought you may agree on some of the issues there.
It was "UPTO" loses of 30%, ie - 1%-30% on my understanding(may of even been 20%), but hey' somewhere in that ball park, that i'm sure ive read !!!. I always assumed a proper scientific study had been carried out, especially as alot of the photo's in the aforementioned book are from a pretty large scientific MJ Lab's in Switzerland( I THINK)_. You Get My Drift Anyway- i aint gonna insult your intelligence. Till next time!!
Be-Lucky..............Scroger'
Ps(I am refering to The lessining of the 12 hour Dark Period Only)
Interesting response and thanks for the sharing, i thought you may agree on some of the issues there.
It was "UPTO" loses of 30%, ie - 1%-30% on my understanding(may of even been 20%), but hey' somewhere in that ball park, that i'm sure ive read !!!. I always assumed a proper scientific study had been carried out, especially as alot of the photo's in the aforementioned book are from a pretty large scientific MJ Lab's in Switzerland( I THINK)_. You Get My Drift Anyway- i aint gonna insult your intelligence. Till next time!!
Be-Lucky..............Scroger'
Ps(I am refering to The lessining of the 12 hour Dark Period Only)
anikas88
Member
I know someone who in the last two weeks of flowering cut down his lighting down to 10 hours but he also bumped up his wattage, and got increased bud density and trich coverage. he was growing in a 4x4 area with a 1000 watt but on the last two weeks of flowering he put another 1000 watt in his area but decreased the hours down to 10 then 8 in the last week. He said that his plants ripened faster more than usual and he saw a weight increase. sadly he cannot grow for legal reasons anymore.maybe someone can do a test and test this out
'Interesting Thought'
'Interesting Thought'
Hey anikas88,
Very Interesting & Sounds About Right, Compensation Factor going on there. 'Food-For-Thought'. 'Yeah get a control test on someone'......
Be-Lucky'..............Scroger'
'Interesting Thought'
Hey anikas88,
Very Interesting & Sounds About Right, Compensation Factor going on there. 'Food-For-Thought'. 'Yeah get a control test on someone'......
Be-Lucky'..............Scroger'
Twisted Metal
Member
I knew a buddy in the past that would only flower with that light cycle cause he wanted his harvests to finish faster. He never had a loss in yield and or quality doing in that way. Its all preference, some growers just want their buds faster.
jyme
Member
hum very interesting i have the room and the time just not the lights to give it a go maybe someday i love experments lol right now im doing some with the dreaded mirical gro products poting soils perlite and plant food just for fun ofcourse lose the fun and theres no intrest in it anymore enjoyment is my fuel
Hey Guy's,
Here's what Ed R has to say on the subject Quoted in CC Magazine'
Quote: Ed Rosenthal- Ask ED- CC mag.
Usually growers using lights force their plants to flower under 12 hours of darkness each cycle. Most domesticated indoor varieties ripen 8-12 weeks after forcing. However, if the dark period is increased the flowers will ripen in a shorter period of time at the expense of growth.
Plants given 16 hours of darkness a day, and 8 rather than 12 hours of light, will ripen 20-30% faster than plants under a regime of 12/12. But you can expect yields of only 50-60% normal. The reason for this is simple - light plus water, nutrients, temperature and good environmental conditions equals growth. Plants exposed to less light produce less growth.
Readers with grow questions (or answers) should send them to Ed at: Ask Ed, PMB 147, 530 Divisadero St, San Francisco, CA 94117, USA.
You can also email Ed at AskEd@cannabisculture.com and send queries via his website at www.ask-ed.net.
All featured questions will be rewarded with a copy of Ed's book, The Big Book of Buds.
Sorry, Ed cannot send personal replies to your questions.
'Interesting ah', i know a lot of reputable growers say the exact same thing, so that seems to blow some theories straight out the water, as i believe the scientific studies have already been done. I Knew' i had read it somewhere, but, do we believe everything we read- suppose it's important who wrote the info/data in the first place. I'm sure Ed would awnser any Q's on the subject. Jorge Cervantes is around here somewhere too...Jorge..jorge??!!!!!??!!!??LOL
'Be Lucky People'......'Knowledge is Power'!! 'Peace'...Scroger'
Here's what Ed R has to say on the subject Quoted in CC Magazine'
Quote: Ed Rosenthal- Ask ED- CC mag.
Usually growers using lights force their plants to flower under 12 hours of darkness each cycle. Most domesticated indoor varieties ripen 8-12 weeks after forcing. However, if the dark period is increased the flowers will ripen in a shorter period of time at the expense of growth.
Plants given 16 hours of darkness a day, and 8 rather than 12 hours of light, will ripen 20-30% faster than plants under a regime of 12/12. But you can expect yields of only 50-60% normal. The reason for this is simple - light plus water, nutrients, temperature and good environmental conditions equals growth. Plants exposed to less light produce less growth.
Readers with grow questions (or answers) should send them to Ed at: Ask Ed, PMB 147, 530 Divisadero St, San Francisco, CA 94117, USA.
You can also email Ed at AskEd@cannabisculture.com and send queries via his website at www.ask-ed.net.
All featured questions will be rewarded with a copy of Ed's book, The Big Book of Buds.
Sorry, Ed cannot send personal replies to your questions.
'Interesting ah', i know a lot of reputable growers say the exact same thing, so that seems to blow some theories straight out the water, as i believe the scientific studies have already been done. I Knew' i had read it somewhere, but, do we believe everything we read- suppose it's important who wrote the info/data in the first place. I'm sure Ed would awnser any Q's on the subject. Jorge Cervantes is around here somewhere too...Jorge..jorge??!!!!!??!!!??LOL
'Be Lucky People'......'Knowledge is Power'!! 'Peace'...Scroger'
yes, if flower entire cycle on 8/16, >total light rec'd.
key is to change light regimes @ different stages of maturity.
from 24/0 to 20/4 to 16/12 to 12/12 to 12/16 to 8/16... ~~~...
ideally, each specific cultivar should have its own compartment to test its photoperiod. starting @ 24/0 & moving down by 15 min per day, until length of dark that steadily produces fruit is reached.
this requires effort...
so most just go 12/12...
though plant may only require 9-10 hrs of dark to flower...
why only 8/16? during final wk or so?
may plant has plenty of energy stored... plant makes & stores energy by way of photosynthesis. during final ripening, dont want plant to be making storing sugar, but distributing sugars to fruit. this generally occurs during dark cycle... temps affect rate of metabolism (cell activity). so slightly higher night temps will permit stored energy (that has accumulated during season, also known as 'salt build-up') to be given to flowers...
not desiring 'growth' during ripening of fruit. growth occurs during 24/0 veg cycle, to get trees ready for heavy tomatoes...
enjoy your garden!
key is to change light regimes @ different stages of maturity.
from 24/0 to 20/4 to 16/12 to 12/12 to 12/16 to 8/16... ~~~...
ideally, each specific cultivar should have its own compartment to test its photoperiod. starting @ 24/0 & moving down by 15 min per day, until length of dark that steadily produces fruit is reached.
this requires effort...
so most just go 12/12...
though plant may only require 9-10 hrs of dark to flower...
why only 8/16? during final wk or so?
may plant has plenty of energy stored... plant makes & stores energy by way of photosynthesis. during final ripening, dont want plant to be making storing sugar, but distributing sugars to fruit. this generally occurs during dark cycle... temps affect rate of metabolism (cell activity). so slightly higher night temps will permit stored energy (that has accumulated during season, also known as 'salt build-up') to be given to flowers...
not desiring 'growth' during ripening of fruit. growth occurs during 24/0 veg cycle, to get trees ready for heavy tomatoes...
enjoy your garden!
