24/0 vs. 18/6 debate is over!!!!
- Thread starter mafuki
- Start date
Shaded420
Well-Known Member
Last post was a few months ago bud.
T Ray
Well-Known Member
First of all it was started in 2016, and the post before yours was in September 2, 2021.
That’s 4 almost 5 months since it was posted on. If that’s an active thread, I guess our definitions of active are different.
Its been brought up from the dead by Jenser with a 3 year between post. So I guess by that math you could call it active.
Plus, you gotta give me some credit for finding the Undetaker gif. It’s a classic. No hard feelings.
Shaded420
Well-Known Member
I mean if your definition of reviving a "dead thread" is one that is literally a few months recent, you've got a lot of gif posting to do my friend!
T Ray
Well-Known Member
Let’s get back on point since this thread is a hot topic now. We’ve officially rose it from the dead and undertaker is proof.
I’m a 24/0 guy. I’ve tried them all but nothing does it for my girls like that 24/0 cycle. They just love it.
My bro told me and he heard it from his bro and we all agreed it’s science and that’s that.
Shaded420
Well-Known Member
18/6 guy myself, but have used 24/0 for periods of time
ttystikk
Well-Known Member
The debate isn't over and won't be until someone does a big study over many runs with multiple strains and carefully controlled and measured inputs. I think we are getting close too such a time when scientists will be able to do this is cannabis but I'm not sure we're quite there yet.
For my two cents, I tried a substantially different approach to veg, taking into account that we're looking for the best return on labor, time, space and energy invested. Soooooo I set a schedule of 8 hours on, 4 hours off twice a day. Did it slow things down? Yes, but by much less than might be expected. It was at least as good as 18/6, maybe better. I'm not sure why because I'm an empiricist more than a theorist but this way the lights were off a full third of the time without the loss of a third of growth.
Make of that what you will; it tells me we still have much to learn about our favorite plant.
For my two cents, I tried a substantially different approach to veg, taking into account that we're looking for the best return on labor, time, space and energy invested. Soooooo I set a schedule of 8 hours on, 4 hours off twice a day. Did it slow things down? Yes, but by much less than might be expected. It was at least as good as 18/6, maybe better. I'm not sure why because I'm an empiricist more than a theorist but this way the lights were off a full third of the time without the loss of a third of growth.
Make of that what you will; it tells me we still have much to learn about our favorite plant.
Crumpetlicker
Well-Known Member
Tried both. Under 24 hours of light the plants continue to grow but they look a little stressed.
It could be just me and my love of sleep.
My plants are happier under 18/6 because that's what makes me happier.
It's not really a debate, it's personal preference.
I didn't see enough extra growth to warrant having the lights on when electricity is at it's most expensive in the early hours of the morning.
No solar panels working then, maybe I'm just a tight arse?
It could be just me and my love of sleep.
My plants are happier under 18/6 because that's what makes me happier.
It's not really a debate, it's personal preference.
I didn't see enough extra growth to warrant having the lights on when electricity is at it's most expensive in the early hours of the morning.
No solar panels working then, maybe I'm just a tight arse?
twentyeight.threefive
Well-Known Member
DLI
calvin.m16
Well-Known Member
I like saving 25% on my electricity bill so I use 18/6. I also notice the plants seem happier.
ISK
Well-Known Member
I agree....back in the 70's there were different opinions and misconceptions on how to control tobacco beetles in cigars.
The cigar industry gave a grant to an university to conduct a complete study, which is still to this day is considered the bible on the subject.
So eventually, we will have these types of professional scientific controlled studies that will establish rock solid evidence as to which method is best to grow marijuana, and/or which method is better for a particular situation.
GrownAtHighAltitude
Well-Known Member
I've been using 12 on, 5.5 off, 1 on, 5.5 off, repeat for veg; and 8 on 16 off for flower. I save even more on electricity and my buds are as good as they ever were. It's been working great for going on 3 years now. I was very skeptical at first, but it works.
Some male plants will even start showing under the 12/1 veg schedule and if they do, I cull those. The good males hold their flowers until the flip to 8/16. Some females like the Tahoe OG cut start to show trichomes under veg but they don't go all the way through and keep up the vegetative growth.
There is more to the cannabis plants photoperiod than is commonly understood.
Some male plants will even start showing under the 12/1 veg schedule and if they do, I cull those. The good males hold their flowers until the flip to 8/16. Some females like the Tahoe OG cut start to show trichomes under veg but they don't go all the way through and keep up the vegetative growth.
There is more to the cannabis plants photoperiod than is commonly understood.
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Zinger59
Well-Known Member
IDK, but I like landrace or close to it so I try to mimic the conditions the plant would experience at home. Afghanistan gets down that low so I would think its OK if genetics are down with it!Hello,
I am noob on my first grow but I have a healthy strain (l.a. woman) so I'd like to play with a the lights little bit and see what results I can get.
I began at 21/ 3
I plan on switching to 5:30/ 18:30 soon for the remainder of veg
For flower at first, I plan on going to 12/ 12 for the first 5 or maybe even 6 weeks. I will see how she's doing.
Then I'd like to drop the light even more like 10/ 14 and even if it takes an additional few days or week for her to finish, I have heard this can increase potency. Is this true?
Zinger59
Well-Known Member
yeah the old days when 4% thc mexican seed weed was all that was available. I think good breeding and science results in high thc levels we are fortunate to enjoy.
ttystikk
Well-Known Member
What you've described is the classic "gaslight timing" designed to interrupt the dark cycle of photoperiod sensitive plants. It's called that because rich English people in early hot houses noticed they could keep seasonal plants in their vegetative phase by running gas lighting (all they had at the time, this was before electric lights) for an hour in the middle of the night.
Your next sentence is interesting; are you saying that your bloom cycle is 8 hours on and 16 hours off?
lusidghost
Well-Known Member
Do you set your lights to full power during veg?
Sofa King Smoooth
Well-Known Member
I am inclined to support 28.35 with the dli.
In my limited experience it seems that if the light intensity is lower then the plants use, then the extended hours to help make up total dli.
With increased light intensity the plants seem reach total usable dli earlier and tend to start showing issues such as taco leaves and nutrient imbalance.
This is why I have went to using:
- CFL on 24 hrs for cut and seedlings (50ish umol)
- led shop lights 18/6 for early veg in 1 gal pot (500ish umol)
- higher output led grow lights 15/9 late veg and autos, 13/11 flower set and stretch, 12/12 early flower, 11/13 late flower-ripening.
Nothing scientific, it works for my set up and helps keep plant count with timing between flowering and veg cycles.
In my limited experience it seems that if the light intensity is lower then the plants use, then the extended hours to help make up total dli.
With increased light intensity the plants seem reach total usable dli earlier and tend to start showing issues such as taco leaves and nutrient imbalance.
This is why I have went to using:
- CFL on 24 hrs for cut and seedlings (50ish umol)
- led shop lights 18/6 for early veg in 1 gal pot (500ish umol)
- higher output led grow lights 15/9 late veg and autos, 13/11 flower set and stretch, 12/12 early flower, 11/13 late flower-ripening.
Nothing scientific, it works for my set up and helps keep plant count with timing between flowering and veg cycles.