24/0 vs 18/6

[shiloh]

How big of a differnt between leaving the light on 24/0 and 18/6? or does it make any different at all...Thanks

[Squamish]

Dirt I would go with 18/6 water 24

[Italiano715]

How big of a differnt between leaving the light on 24/0 and 18/6? or does it make any different at all...Thanks


Dirt I would go with 18/6 water 24


First off, Squamish, that sentence needs to be cleaned up and in tune a bit more. Water 24? What are you referring to. If I can't understand I'm sure the person asking the question can't.

Second. This has already been debated and can be found here.....

which is better? 24/0 or 18/6 lights (http://boards.cannabis.com/indoor-growing/170311-better-24-0-18-6-lights.html)

18/6 vs 24/0 (http://boards.cannabis.com/basic-growing/151905-18-6-vs-24-0-a.html)

After you read them, make your own opinion on what you want to do. Because it will be disputable anywhere you ask it.

Happy Reading! :jointsmile:

[headshake]

not to mention didn't shiloh start one of them?

-shake

[oldmac]

How big of a differnt between leaving the light on 24/0 and 18/6? or does it make any different at all...Thanks

This is a subject that we kick around every few months, sometimes very intensely.

Any light schedule between 24/0 and 16/8 works fine, so it comes down to what works best for you, in your particular grow.
Personal choice.

Let's not :beatdeadhorse: on this subject.

(I must type slow, or something, did not see my friends beat me to this one)
LOL :D

[NeverEnough]

I didnt follow the link the guy posted but the difference is that during the period of night allows the roots to grow. Without the darkness the roots will not grow as well.

[oldmac]

I didnt follow the link the guy posted but the difference is that during the period of night allows the roots to grow. Without the darkness the roots will not grow as well.

Sorry NeverEnough but you are mistaken. Roots DO NOT grow during the dark period, only during the photoperiod. While the roots my grow below ground level in darkeness unless the part of the plant above ground level is in photoperiod (has light) no growth occurs.

That is why when rooting cuttings the most suggested method involves 24hrs of fluroescent (much blue, low intensity) light. If plants needed dark at this stage of growth to grow roots, the 24hr method would not work at all.

I hope this helps clear up your confusion.:)

BTW, there is some debate as to whether the plant needs a dark period during vegative growth stage, there is no science to indicate that either.

[Dutch Pimp]

maryjane keeps some secrets to herself

[GetThisOrDie]

Ive been wondering that myself... I switched my seedlings in hydro from 24 to 18 the other night. If theres not really a difference then that makes me feel better.

I agree with you Dutch... She has many secrets and we will probably never know them all.

[Italiano715]

LoL and it begins....It's funny how even though you give someone the links to our (mainly Oldmac, RT, IR contributions) other debates on the same subject, people still tend to want to argue in a new one! :D

It's a never ending cycle of people who are too lazy to click the links and read... :stoned:

[420barista]

Ok Gotta Kick that horse myself. I cant help it.

I seen a post a while back concerning root growth vs dark period.
and the result of the study was that root growth was 55% on an 8 hour off and 16 on cycle more than with the light on constantly.

Then another post coined an article on another site claiming that a dark period is not necessary for canabis since its classified as a G3 plant.

Anyway with so much conflicting info ya gotta wonder who is right???

[Italiano715]

Ok Gotta Kick that horse myself. I cant help it.

I seen a post a while back concerning root growth vs dark period.
and the result of the study was that root growth was 55% on an 8 hour off and 16 on cycle more than with the light on constantly.

Then another post coined an article on another site claiming that a dark period is not necessary for canabis since its classified as a G3 plant.

Anyway with so much conflicting info ya gotta wonder who is right???

It may be found out one day, but who's to REALLY say what is right. People have had success doing it either way.

For instance, a plant outside grows bigger NATURALLY (keyword) without the 24/0 method, only going on the natural light/light times they receive during their lifetime. Yet, some people who do indoor grows have had success with the 24/0 cycle all the way up to flowering time. Saying they have gotten more root mass then other ones.

Maybe that's true, but who is to say it's caused DIRECTLY (another keyword) by the cycle duration. I personally think either way can work, it's more so the ENVIRONMENT (last keyword :D ) that the plant is in that distinguishes how well it will grow IMO (constant temps, water feeding, fertilizers[amounts], etc.).

PS so whos next to :beatdeadhorse: :D:D

[oldmac]

Ok Gotta Kick that horse myself. I cant help it.

I seen a post a while back concerning root growth vs dark period.
and the result of the study was that root growth was 55% on an 8 hour off and 16 on cycle more than with the light on constantly.

Then another post coined an article on another site claiming that a dark period is not necessary for canabis since its classified as a G3 plant.

Anyway with so much conflicting info ya gotta wonder who is right???

Could you please give me a reference to where I might find this study? I really would like to read it.
If 16/8 could produce 55% more then any other photoperiod, I think we all would be using it. I know I would since time is money.
Cannabis is a C3 plant (hope that's just a typo) like the majority of the worlds plants and trees. Plants are either C3, C4, or CAM, and refers to how the plant utilizes co2 to form carbon compounds.
Dr. Mechoulam (the father of cannabis research) showed over 40 years ago mj could grow during it's immature stage (we call vegative) with a 24hr photoperiod. That FACT shows up in research papers to this day. The only debate on that subject appears on threads like this. The question is what is most efficent, is there a point of diminishing returns for the energy (electric) used vs. the growth produced.
You will find if you read scientific papers and textbooks there is a whole lot less conflicting information. I recommend "Horticulture: Principles & Practices" by Geroge Acquaarh, while not mj specfic it provides info on plant biology that you can use to exploit the plant.

Which brings up Italiano's point that we can get the plant to do things it would never do naturally. You will never find a bunch of SOG size plants growing in nature, but you can in my bloom room. :D