Im at 6 weeks flower and the buds look beautiful but I just recently read that some people switch the lighting to 11 on 13 bc the plant produces more resin in the dark. Does anyone kno for certain if this is true and will it decrease my yield? Im harvesting in a week and a half regardless so let me kno.
11 on 13 off?
- Thread starter ReeferMe
- Start date
grandpa 1949
Well-Known Member
Well I never heard that one!
I say just keep it on 12/12.
I'm old school.
Just me careful of the guy selling magic beans too. LOL You know Jack and the bean stock!
No harm in asking.
I say just keep it on 12/12.
I'm old school.
Just me careful of the guy selling magic beans too. LOL You know Jack and the bean stock!
No harm in asking.
ImAgIaNtInDaGrOwWoRlD
Active Member
It will help "speed up" or "super charge" the rate of growth while flowering if you do it for just a week then back to 12/12. I think its supposed to be done around weeks 2 thru 4 to supercharge, or the last week of flowering to help finish up a stubborn strain. I could be wrong but I read something similar too. Tried it once awhile back and I think it did work. I wouldnt recommend flowering them through the whole cycle like that. I think its just for a couple days or a week but no longer than a week if Im not mistaken. Anyone else have some usefull info on this subject?
BigBuddahCheese
New Member
I ran 11/13 for years and when I received my (2) 600s I set em to 12/12 .. no difference. So I set em back to 11/13 to save electricity only verified reason to do it.
k0ijn
Scientia Cannabis
As already mentioned, it will speed up the growth and thereby the finish of flowering.
It will not pump out more trichomes (that is one of those generic trichome myths), but it will help your plant finish, especially usable for strains with a long flowering period (mostly Sativas).
It will not pump out more trichomes (that is one of those generic trichome myths), but it will help your plant finish, especially usable for strains with a long flowering period (mostly Sativas).
potroastV2
Well-Known Member
Well, I'm of the opinion, from years of reading and studying, that we want to give our plants the most light we can while continuing flowering. So I run my flowering light schedule at 13 ON / 11 OFF. Giving more darkness does not produce more trichomes, or resin, or speed up flowering. It only makes your plants grow less, which during flowering means grows fewer buds/resin.
I still go by what Rob Clarke said in Marijuana Botany: (paraphrasing)
studies have shown that half the amount of THC is produced when using 10 hours of light per day versus using 12 hours of light per day during flowering.
So for the past 8 years, I have run 13 hours ON.
I still go by what Rob Clarke said in Marijuana Botany: (paraphrasing)
studies have shown that half the amount of THC is produced when using 10 hours of light per day versus using 12 hours of light per day during flowering.
So for the past 8 years, I have run 13 hours ON.
cannofbliss
Well-Known Member
yes... definitely correct... also certain phenos that still have dominant landrace genetics, can vary for more or less light at just the right amount to trigger flowering... this is to maximize use of time for lighting...
me paraphrasing... LIGHT GOOD... dark bad...I still go by what Rob Clarke said in Marijuana Botany: (paraphrasing)
studies have shown that half the amount of THC is produced when using 10 hours of light per day versus using 12 hours of light per day during flowering.
So for the past 8 years, I have run 13 hours ON.
antimatt3r
Well-Known Member
I just tried this for the first time as well, starting at about 7 weeks and soon as I took an hour away it seemed like I got a new burst of white hairs, new growth like. Not sure if this was just the natural cycle of the plants or if the light change did it but it seems like it possible actually added some weight due to this little growth spurt of new hairs triggered by shortening the light cycle. Not sure if I should go back to 12/12 or just finish right thru the flush at 11 I think I am going to let the 11 hours ride this time just to see what happens 
antimatt3r
Well-Known Member
This is interesting and it makes sense I wonder what the TRUE answer to this debate is!!!!
Well, I'm of the opinion, from years of reading and studying, that we want to give our plants the most light we can while continuing flowering. So I run my flowering light schedule at 13 ON / 11 OFF. Giving more darkness does not produce more trichomes, or resin, or speed up flowering. It only makes your plants grow less, which during flowering means grows fewer buds/resin.
I still go by what Rob Clarke said in Marijuana Botany: (paraphrasing)
studies have shown that half the amount of THC is produced when using 10 hours of light per day versus using 12 hours of light per day during flowering.
So for the past 8 years, I have run 13 hours ON.
BigBuddahCheese
New Member
It's the same debate as all the others.. flush not flush, organic chemical, defoliate not-defoliate blah blah... try it if it works for you do it, if not then don't. Everyone has their "expert" they were told or read about blah blah... I run 11 on/ 13 off, sorry it works for me no mater who said what paraphrased what... and that's all that matters.
and paraphrasing.. I guess I am happy with 75% of the THC according to Mr Clarke I guess.. lol.
alonefarmer420
Active Member
All i know is give them 48-72 hours dark period before harvest, pumps resin out and tightens nugs up nice. worked for me.
potroastV2
Well-Known Member
Yep, that's exactly what you are getting, but you're saving about 2 cents a day in electricity. Good job!
Yeah, that's good, just listen to the experts and then do something different that you think is right, even though your results are sub-par.
I85BLAX
Well-Known Member
An old buddy of mine from West Virginia used to reduce his day portion of his lighting schedule by 30 minutes a day once he got within three weeks and would always end up with like a three day dark period at the end of the life cycle. And, man he had some of the most frosty, stinky weed I've ever seen.
Jogro
Well-Known Member
In a nutshell, reducing the duration of lighting makes the plant "think" that winter is coming, and makes it finish flowering sooner.
The conventional wisdom is that doing this trades a slightly shorter flowering time for slightly lower yield with no effect on potency (positive or negative).
In terms of resin production, I think the idea isn't that the plant makes more resin in the dark per se, its that light degrades THC. Some people give a plant 2-3 days of pure dark time prior to harvest with the idea that this will let the plant build up THC to max levels before harvest. My understanding is that this has actually been proven to increase THC content in *SOME* strains.
The conventional wisdom is that doing this trades a slightly shorter flowering time for slightly lower yield with no effect on potency (positive or negative).
In terms of resin production, I think the idea isn't that the plant makes more resin in the dark per se, its that light degrades THC. Some people give a plant 2-3 days of pure dark time prior to harvest with the idea that this will let the plant build up THC to max levels before harvest. My understanding is that this has actually been proven to increase THC content in *SOME* strains.
polyarcturus
Well-Known Member
Well, I'm of the opinion, from years of reading and studying, that we want to give our plants the most light we can while continuing flowering. So I run my flowering light schedule at 13 ON / 11 OFF. Giving more darkness does not produce more trichomes, or resin, or speed up flowering. It only makes your plants grow less, which during flowering means grows fewer buds/resin.
I still go by what Rob Clarke said in Marijuana Botany: (paraphrasing)
studies have shown that half the amount of THC is produced when using 10 hours of light per day versus using 12 hours of light per day during flowering.
So for the past 8 years, I have run 13 hours ON.
whats you average flowering time on say an average 8 week strain like WW, im always playing with my light timing.
right now i run my 400w HPS 12/12 and my 400w MH+ x2 26w cfl reptisun 11/13. been doing some amazinf things been thinking about increasing both the times an hour, but speeds the game for me i dont have more than 8 weeks to flower if they take longer they start to hold up the new generation and they get too much veg time and get to tall sometimes.
polyarcturus
Well-Known Member
cold soil works better than the darkness for 3 days... try cold soil for 1 night, put them on a concrete floor.... they sense the temperature change.
polyarcturus
Well-Known Member
yeah i know its not an 8 week strain but at 8 weeks its still good...thats just my time frame and thats my longest flowering plant i still chop at week 8 still nice. sometimes they get an extra week, just depends on new generations stage of development, im still yeilding good if thats the point your driving at in 8 weeks. but i do yeild better with my faster flowering strains like the purple i have and bluecheese, the afgan is moving slow but its a seed i wont know till the clones get going.
maybe ice in a cooler with a bucket inside with the plants in the bucket, like to harvest when the soil is drier. i have also heard of people cutting and putting it in a vase full of ice water for a day or 2.
maybe ice in a cooler with a bucket inside with the plants in the bucket, like to harvest when the soil is drier. i have also heard of people cutting and putting it in a vase full of ice water for a day or 2.
vilify
Well-Known Member
I see. Just thought u might have been referencing some of these "white widows" that you can get from a bunch of breeders. If its working well for you, then good for you.
I havent played around with after harvest techniques a lot. just did a comparison between darkness and cold water. that sounds like a good alternative.
I havent played around with after harvest techniques a lot. just did a comparison between darkness and cold water. that sounds like a good alternative.