photoperiod or light cycles

  • Thread starter Swagnum grow-op
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Swagnum grow-op

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i had a buddy of mine suggest something to me before that i had never heard of and his reaction was of disgust to the extent he didnt really elaborate on the matter and i recently bumped into some material on the subject and was wondering if anyone else has ever heard of this practice and if so what were the results because it sounds like it could be very beneficial



its a photoperiod cycle described or known as 12-1, exactly when my buddy suggested that i consider 12-1 cylce i didnt know what the hell he was talking about he laughed at me and walked of mumbling something to the effect that i read all those damn books and still dont know shit but never explained so a new year has come around and i found some info that states that 12-1 during the veg state lights can be operated for 12hrs on 5 1/2 hours off then 1hr on and the 5 1/2 hours off for every 24 hr day supply of light and and rest and continuosly run those setting for entirety of veg the claims are that the extra hrs of light are definitely not nessacary for established seedlings and clones with established and sufficient root zones and may even aid in the reduction of environmental stresses to plants caused by heat and/or excess humidity by providing a more natrual distrubution of light hours pr 24hr day in addition to the obvious benefit of cutting 5hrs of electrical usage for light and ballast during veg compared to the standard or popular method of vegging for 18-6 or similar after the establishment of sufficient root mass is not needed


12-1 for the flowering stage is intended to begin on a scale starting at 11hrs on 13hrs off and for the average flower cycle lasting approx 8-10 weeks hours of light on should gradualy decrease an 1/2hr every two weeks until the last two weeks or so of flowering being lights on 9hrs and 15hrs off this practice or theory claims to be very beneficial and stimulative for plant growth and exceleration seeing as though most significant development and healing from the effects of cloning and transplanting are done during lights out and the theory of it being more like the proper balance of light consumption to rest by tricking the plant with the staggered on off effect during veg and the gradual decrease in light like in outdoor setting as the seasons change as in most outdoor setting even more equtorial regions nowhere in the world i can think of gets 18 hrs of sunlight a day exept maybe alaska and parts of canada for 6 mos but its brick ass cold there so it still wouldnt apply for growing and the once again were cutting electrical cost startin at an hour a day at the begining of flowering increasing to 3hrs pr day at the end of flowering. shit i cant bullshit cha the overall electrical savings seem worthy of futher examination alone thats not even taking in consideration the other claims and boast of excellerated growth and better off overall well being by using this practice as long as if doesnt cost the plant or growing envirnment to suffer the electrical savings and less frequent replacement of equipment do to less use sem s like enough for me ill kindly step down off my soapbox now and hopefully i can get alot of feedback and insight into this matter
 
Seamaiden

Seamaiden

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You've described a staggered photoperiod. It can be very useful if you're an OD grower who starts cuts inside during winter in preparation for OD. It interrupts the dark period, which is the 'important' time in that it causes the hormonal changes in the plants that help it determine whether to put out vegetative or flowering growth.

My photoperiod is set differently because I do have a different goal--being able to set plants outside without them being triggered immediately to flower. Therefore, I don't do that with the flowering plants that are being run indoors. I'll have to chew on using this method for indoor growing, based on my understanding of staggering photoperiod the dark cycle is interrupted sufficiently to stop flowering response. If I've got a batch of girls in flower, I don't exactly want to achieve that.
 
S

Swagnum grow-op

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thank you for your input @seamaiden the hormonal response caused by the extra or exposure of darkness is what causes plant to stay in veg for as long as you need them to stay in vegetative state

Therefore, I don't do that with the flowering plants that are being run indoors. I'll have to chew on using this method for indoor growing, based on my understanding of staggering photoperiod the dark cycle is interrupted sufficiently to stop flowering response. If I've got a batch of girls in flower, I don't exactly want to achieve that.
LOL i understand that completely


but ,as explained in article i read 12-1 for flowering is closer to what is regularly practiced in the trade by using 12-12 differing slightly by starting flowering process with less hours of light than used normaly and gradualy decreasing hours of light toward the end of flowering which is something ived emploted before just cause it made sense to me that wasnt a new one for me i just never new there was a name or technical term for it. in addition to reducing hours of light toward end of flowering i also attemp to drop temps in flowering room 5-10 degrees for last two weeks as well as humidity below 40% if possible

@convex thanks you also for adding on bro ,i havent read jeff teks article yet but im enthusatic about getting to it as i always enjoyed his point of view in skank mag im still throwng his idea of the hydroganic buckets around where he seperates a regular flower pot in halves uses a soiless mix on one side and straight perlite on the other. double feeds soiless mix side once a week and plain reverse osmosis waters perlite side daily. with the use of those hydro blocks cant think of there name at the moment i wanna say rockwool but i know thats not what it is and i dont think he uses coco coir either but anyway jef tek carries a red wallet with bad muthafucker stamped on it in my book

i appreciate the info fellas and id still like to hear from anyone that uses or has used the 12-1 during veg as far as pheasability it definitly sound possible to do but with how much sucess without retarding growth, im still thinking about electrical saving alot of the other benefits claimed in article i read i think are going to be subjective to each induvidual grow situation
 
S

Swagnum grow-op

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hey thanks for that read @convex teks process differs from the 12-1 photoperiod. for the flowering stage he uses what ill call 6-12 cycles which uses less light during the flowering stage than 12-12 and the 11-13 declining every two weeks ending at 9-15.

over a 60 day flower period

12-12 uses 720hrs of light
11-13 declining uses 574hrs of light
teks 6-12 uses 480hrs of electricity
effectively giving you an additional 240
hrs of electrical usage for lights, to equal 12-12s 720hrs per 60 day cycle. which translates to me that , sativas that take more than 8 weeks to mature can stll go another month under 6-12 and still only equal the normal amount of electic used for 60 days of 12-12, interesting


in using teks practice you cut the 12-12 down a third in electrical usage for lights and beat the 11-13 declining by almost 100hrs per 60day flowering cycle
that sounds hella good from where im sittin

so now that leaves me thinking 12-1 or the gas lantern routine is what it was reffered to buy athour of article i read for veg and teks 6-12 for flowering.havent done the math on it but ive done the math to it and should i dare to say that compared to using 18-6 or 24-0 like i know some that do claiming higher rates of females when starting from seed and 12-12 for flower seems like id be cutting electrical use for lighting by atleast 30% if not in half but then again maybe im just high. either way bro thanks for the headsup on that 1
does anyone else have any thoughts or experience on the subject they would like to
share. remember sharing not to be confused with sharon is caring also not to be confused with karen
 
Seamaiden

Seamaiden

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Show me more numbers, and a chart on how the photoperiod is reduced, please. I have a hard time visualizing it.
 
Seamaiden

Seamaiden

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If I could see the cycle laid out, like in a chart, it would be easier for me to get my head wrapped around it. I have a hard time when I see numbers. Letters I'm fine, numbers, not so much.
 
S

Swagnum grow-op

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first you say'' Show me more numbers'' then you say ''I have a hard time when I see numbers''.

dude i really dont meant to be a dick but that doesnt make much sense , and your asking for a chart that would be full of numbers IF i had any idea how to make one

firstly remember that i was asking if anyone else has heard of this practice or have any experience using it

i dont know how to make charts and im no big expert on anything so your looking for help from a guy that has no experience with the subjectas well

vegatative photoperiod for plants started from seeds and clones but especially for seedlings beacause with seedlings the plant is not mature enough to flower until atleast two months above ground wich is not the case with clones whos sex has already been determined and if repeatedly exposed to 12+ hours of uninterrupted darkness will initiate flowering. normal photoperiod for vegg would be 18-24hrs light on 0-6hrs off. using 12-1 photoperiod during veg plant photoperiod is 13hrs on 11hrs off per day -12on 5.5off 1on 5.5off every 24 hrs, staggering as you stated keeps plant in veg due to interruption of dark cycle but also helps plants grow and heal faster from the additional hours of darkness but not alowed to flower due to the interruption of dark cycle, i really dont know how else to word that but instead of 18on-6off,,, 12on 5.5off 1on 5.5off
 
Seamaiden

Seamaiden

Living dead girl
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Sorry, don't mean to be a pain, I wasn't kidding when I have a hard time with this kind of thing. And, like I said, I've heard of staggering, but know little about it except for that which I have direct experience, and it's different from this, has a different purpose.

But when you start talking about electricity savings like you were outlining above..? THAT got my attention. That wasn't why I started using the staggered period, but it's a great benefit, and those are pretty decent savings if it works.

So, would you dedicate a run or two to this? I don't have the extra rooms, myself, so lighting experiments are taken with caution.

***I tried slogging through that TY to find the article in question and I couldn't find it easily. When do you begin the clock when calculating the change of light? I see that you said it's reduced by .5hrs every two weeks. You mentioned an average flowering time of 8-10 weeks and a lighting goal of... 9:ON/15:OFF, but not when the cycle is begun. Is there any mention of longer-flowering strains, OR, would this cycle speed up their flowering????

Ohh... think about that....
 
Seamaiden

Seamaiden

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Gotta spread some love before I hit you again, convex, thank you.
 
convex

convex

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do u really think the yield could be as good or was he just trying to sell the harvest master?

id think youd have to add a few "days" and/or lose some weight and density with half the light

I really don't know, I have read of similar cycles in the past, but would never entertain trying for myself without a controller like he has ... and that ain't gonna happen anytime soon ;)

Never the less a good read.

Cheers
 
S

Swagnum grow-op

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ive never tried jeff teks method either, or heard of it for that matter ,and id like to thank convex again for sharing that with us , i belive tek is definitely pushing harvest master but i still belive the theory behind the accelerated light cycle is spot on.
 
U

Underground

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Sorry, don't mean to be a pain, I wasn't kidding when I have a hard time with this kind of thing. And, like I said, I've heard of staggering, but know little about it except for that which I have direct experience, and it's different from this, has a different purpose.

But when you start talking about electricity savings like you were outlining above..? THAT got my attention. That wasn't why I started using the staggered period, but it's a great benefit, and those are pretty decent savings if it works.

So, would you dedicate a run or two to this? I don't have the extra rooms, myself, so lighting experiments are taken with caution.

***I tried slogging through that TY to find the article in question and I couldn't find it easily. When do you begin the clock when calculating the change of light? I see that you said it's reduced by .5hrs every two weeks. You mentioned an average flowering time of 8-10 weeks and a lighting goal of... 9:ON/15:OFF, but not when the cycle is begun. Is there any mention of longer-flowering strains, OR, would this cycle speed up their flowering????

Ohh... think about that....

From the outside looking in, it appears what he is saying is it's a 12/12 period for veg with an hour of light thrown into the middle of the dark period to keep them from going to flower. I've read about that too. I haven't started anything, but that's something I intend on trying myself.
 
S

Swagnum grow-op

15
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i didnt know how else to say it but undergrounds got it light schedule for veg is almost like 12-12 but with a hour thrown in the middle of the dark period

how long you veg is up to you, wich mostly likely depends on if your starting from seed or using clones, with seeds its going to be atleast a two month seedling/veg period just to determine sex. seeing as though i dont belive in "feminised" seeds. when using clones its up to you how long you vegg as you should only need a week or two for sufficient root mass to initiate flowering


by seamaiden: When do you begin the clock when calculating the change of light? I see that you said it's reduced by .5hrs every two weeks. You mentioned an average flowering time of 8-10 weeks and a lighting goal of... 9:ON/15:OFF, but not when the cycle is begun. Is there any mention of longer-flowering strains, OR, would this cycle speed up their flowering????

i have no idea what you mean by: when do you begin the clock when calculating the change of light?

as far as strains that take longer than 8-10 weeks to flower what i read did not directly state that the lighting schedule speeds up flowering times but it does imply that the extra darkness does promote excelled growth but not nessacarily maturity so i assume that if plants are not mature by the time you get down to 9on 15off youd continue that schedule until full maturity

get back at me on what exactly is meant by when the cycle is begun still confused about that
 
dextr0

dextr0

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phytochrome manipulation


Thought U might b intrested in that.
 
Seamaiden

Seamaiden

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i didnt know how else to say it but undergrounds got it light schedule for veg is almost like 12-12 but with a hour thrown in the middle of the dark period
Which is very close to what I do with all my vegging ladies.

by seamaiden: When do you begin the clock when calculating the change of light? I see that you said it's reduced by .5hrs every two weeks. You mentioned an average flowering time of 8-10 weeks and a lighting goal of... 9:ON/15:OFF, but not when the cycle is begun. Is there any mention of longer-flowering strains, OR, would this cycle speed up their flowering????

i have no idea what you mean by: when do you begin the clock when calculating the change of light?
When does the light reduction clock start was what I was asking, how long after the flip, but.. I guess there isn't a flip, per se. But! Someone else on another forum I belong to has started a thread on this Harvest Master controller thingy, and others who've used older and other versions have chimed in. They said there is a slight reduction in yield, though you get one more full harvest in per year. They couldn't answer about the power savings (yet).

What I came away with was that to try to do this sort of photoperiod manipulation without a master controller would be a massive pain in the ass, and I've only got so much ass to pain.
as far as strains that take longer than 8-10 weeks to flower what i read did not directly state that the lighting schedule speeds up flowering times but it does imply that the extra darkness does promote excelled growth but not nessacarily maturity so i assume that if plants are not mature by the time you get down to 9on 15off youd continue that schedule until full maturity

get back at me on what exactly is meant by when the cycle is begun still confused about that
Sativa flowering can be manipulated by shortening daylight photoperiod, which can apparently be quite helpful with those girls who would spend two years flowering if you let them.
 

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