Putting the nail in the myth: 24/0 vs 18/6

[GrowingMadness]

I can't find my old 7 page thread regarding this.

There we've had a lot of debates whether continuous light is better than 18/6

We did agree that plants don't need the dark time to GROW

But when they have the dark time they STRETCH

So what I did was make an experiment. One plant was under 24/0, the other under 18/6 for several days.

Result?

18/6 is 2x bigger

Why?

It stretches during the dark time, allowing more room for leaves to grow and more light for each leaf.

There, now it all makes sense. If you want your plants to grow faster, put them on 18/6.

 

[CapTainCrunchBerry]

no pics???

 

[Toke+Choke]

i agree with this my mate is doing constant 24/0 lights and im doing 18/6 and my plants look to be a little bigger and more green on the leaves his are are more see though yellowish type you know what i mean ?

 

[doogleef]

18/6 is the ticket. Saves on power and the plants like it.

Check my grow. 2 weeks left

 

[sirbudmaster]

all this really proves is that if you do 24/0 verse 18/6 you can have more compact plants...sounds great if you have space constraints....I believe the real debate on 24 verse 18/6 is male to female ratios NO?


Peace

 

[BigBudBalls]

Well, are the plants clones from the same mother? If not, the test results is rather biased/compromised.

Twice as big. What does that mean? Twice the height, but same amount of vegetation? Twice the vegetation?

 

[itsgrowinglikeaweed]

Well, are the plants clones from the same mother? If not, the test results is rather biased/compromised.

Twice as big. What does that mean? Twice the height, but same amount of vegetation? Twice the vegetation?

BBB is right. I think you have oversimplified this just going by plant height. There are MANY other things to consider. For example- A short compact plant will shade its own lower nodes, whereas a taller somewhat stretched plant will allow more light though to the lower foliage. This will definitly affect eventuall yeild. And that is what we are all MOST interested in. YEILD. Not just height.
For the record and with ALL things considered, I do believe 18/6 to be the way to go.

 

[DownOnWax]

I have to say that this thread proves NOTHING.

If you are going to do an experiment like this and have people take you seriously then you need to be a hell of a lot more organized. You are just expecting us to take your word on it.

You need to have 2 IDENTICAL grow rooms. Same light, same temps, same mediums, etc., etc., etc. Grow at least 2 plants of the same strain per room and publish a very detailed journal with pictures.

Right now it's just hear say.

 

[GrowingMadness]

I have to say that this thread proves NOTHING.

If you are going to do an experiment like this and have people take you seriously then you need to be a hell of a lot more organized. You are just expecting us to take your word on it.

You need to have 2 IDENTICAL grow rooms. Same light, same temps, same mediums, etc., etc., etc. Grow at least 2 plants of the same strain per room and publish a very detailed journal with pictures.

Right now it's just hear say.

As I've said before, Call Mythbusters!

 

[simpsonsampson420]

I have to say that this thread proves NOTHING.

If you are going to do an experiment like this and have people take you seriously then you need to be a hell of a lot more organized. You are just expecting us to take your word on it.

You need to have 2 IDENTICAL grow rooms. Same light, same temps, same mediums, etc., etc., etc. Grow at least 2 plants of the same strain per room and publish a very detailed journal with pictures.

Right now it's just hear say.

its funny you mention that because i am trying to figure out a way to do this, along with some other experiments, on my next grow... i just have to figure out how to rearrange... if i can figure it out it will by like a mythbusters - "weed episode special"... a few different pruning techinuqes for growth and yield comparison under 2 different light scedules... plus some germinating, rooting, and cloning things...

 

[GrowingMadness]

its funny you mention that because i am trying to figure out a way to do this, along with some other experiments, on my next grow... i just have to figure out how to rearrange... if i can figure it out it will by like a mythbusters - "weed episode special"... a few different pruning techinuqes for growth and yield comparison under 2 different light scedules... plus some germinating, rooting, and cloning things...

Crap, this could be a really good internet-tv-series

This particular myth would be very hard to do, but I imagine there are more simple ones.

Hmmmmm... *looks at hd cam..*

 

[petrock]

I would have to agree about the posts that indicate a lack of controls
or a way to really measure the results of your experiment.
Howevr it does seem that there is a benefit to the dark
period.
Although I am only on my first grow my research and my personal observations
suggest that the plants seem to benefit from the dark period after the seedling stage.
I also found the coments interesting as well about the the lower foilage growth
and ultimate yeild I am going to keep an eye on that aspect of it.
Good luck to all

 

[jimisimmortal]

time lapse video would be cool

 

[HAT TRICK STEVE]

and what about vertical lighting? right now i have all my baby plants in a phototron with 6 vertical 40 flouros and a shelf in the middle,.... my plants receive no light from over head all from the sides,..... and strain has got to have something to do with it too,.. right now the 2 3 oldest are, 2 skunk1's and , 1 north lights,... the skunks have very close nodes, less than a 1/2 inch, while the north lights is more stretched out and taller, like 1.5 inch nodes,..... plus i have a bunch of others in there started at different times,... big buds, and bbl gum started about a week or so ago,.. and ice, and sk1xthai maybe about 3 weeks old,....

 

[NeoAnarchist]

if u want to grow, why wouldnt you just stick with how mother nature intended on the lite cycle for plants to be setup? plust 24/0 is pretty ridiculous, why would u ever want ur lite to be going ALL the time? id freak out when im not there, thats why i set it up to where im home when the lite comes on. hands down, 18/6 will outbeat 24/0 anyday of the week, its how nature intended it.

 

[sirbudmaster]

if u want to grow, why wouldnt you just stick with how mother nature intended on the lite cycle for plants to be setup? plust 24/0 is pretty ridiculous, why would u ever want ur lite to be going ALL the time? id freak out when im not there, thats why i set it up to where im home when the lite comes on. hands down, 18/6 will outbeat 24/0 anyday of the week, its how nature intended it.

IF your rooms are set up properly, there is no need to worry. My T5's have not been shut off in 6-months! No worries there!

Peace

 

[Talisman]

Two indicas, two sativas, NL's and thai ss. Both from same mothers respectively. Two on 18/6 two on 24/0. The 24/0s grew faster. This is a true study not hearsay so listen don't listen but the dark time is not important in the first 2 months at any rate. Want fast do 24/0 want natural do 18/6 but the latter has not shown any advantages and that is that. Or should I do it 800 times to prove to the nuts that this is the best example you can get...

 

[SpruceZeus]

Wow i've never heard so many opinions stated as fact.
As stated, the dark photoperiod will promote growth, but not necesarily nodal formation. 24/0 will keep your plants more compact with an equal amount of budsites.

why would u ever want ur lite to be going ALL the time? id freak out when im not there

As for leaving your lights on for extended periods of time, if your growroom is wired properly than it shouldnt be a problem, if its not, then fuck you, everytime a house with a grow op burns down i shed a tear. If you're honestly not comfortable with having your lights on when you're not home than you probably need to sort your shit out before you can carry on as a marijuana grower. Sorry if that comes off as harsh, but its situations like that that lead to fires, and fires in growrooms make us all look bad.
At the end of the day of course, like most things, it comes down to personal preference.

18/6 will outbeat 24/0 anyday of the week, its how nature intended it.

This is just not necesarily true. And using nature as justification is fucking weak.
Nature wants spider mites to thrive right? Why don't we just introduce those into our growrooms? Or how about we simulate cloudy days by using weaker lights? Maybe simulate a drought or a windstorm every now and then?
I think we can unanimously agree that the sun is the best grow light there is. However theres more to it than that.

Regardless to weather you prefer 24/0 of 18/6 its proven that either way can be successful. Like most things in growing weed, there is no "right" or "wrong" If it works it works, and if it doesn't it doesnt.

 

[Nocturn3]

This will definitly affect eventuall yeild. And that is what we are all MOST interested in. YEILD. Not just height.

Couldn't agree more. With this in mind, I will post a trial by OT1, who knows his shit pretty well. His results show pretty conclusively that 20/4 yielded better than either 18/6 or 24/0.

We did a lot of experiments with light times a few years back using known sat and sat dom clone lines.

With Vegging ie under hid lights.

20/4 produced the most sturdy growth and the most bulk. Best final yield, taken as 100%.
22/2 Less of both. yield 88%
18/6 Studier than 22/2 but slightly less bulk. yield 87%
24/0 Much lighter in all aspects than 18/6. Yield 79%
16/8 The weediest plants. yield 67%

....

For the mum lines we have 20/4 to 12/12 gives the best crop weight and bud quality, really thats all I’m interested in.

Source.

 

[Heads Up]

Growing weed is like golfing, you can't really beat the game, but you can develop your own style and improve your game. My first grow I did 12/12 from seed and basically tried my best to kill them, instead ended up with a bunch of dwarf females not even two ounces but the bagseed smoke was very good. I'm going 18/6 with my second grow. My plants are just over four weeks old and they amaze me every day. I have nine, four thc bombs, two caramelicious and three bagseed. They range in height from about five inches to a foot. I have no complaints and in the next week or so plan on starting the flowering process. I decided against 24/0, I couldn't think of anyplace on earth where those growing conditions are the norm. To each their own, as my mom used to say, that's why they make chocolate and vanilla.