light schedule advice please?

Louisville79 said:

Thank you,that's exactly what I would do also now knowing my conditions and temperature issues I just didn't want to make to drastic of a change because I've had a hermaphrodite problems already before in the past.but again thank you very much

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TheChemist77 said:

have you or anyone done a side by side test using the 24 hour darkness before flower and the other room straight from grow to 12/12? ive done years of side by side testing of nutrients, never thought of testing light cycle differences. i can see how that long darkness can get a jump on flowering but does it yield more? i would guess plants may show gender a day or 2 sooner w/ the 24 hour darkness but other than that is there any PROVEN differences??

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Dr. Who said:

No.....
No.....
No.....

Read this thread on the subject -

https://www.rollitup.org/t/24-hrs.868835

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7mend07SweetnSticky said:

Quick question. I just started some plant. Planted the seed yesterday. I know it late in the season. But I kept lights on all night last night and was wondering if 24hr light would get them to sprout faster?

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TheChemist77 said:

ok, so its the uv rays that increase resin to protect the plant from uv rays correct? and lights off for 24-hrs or more at onset or even after flowering does nothing as i suspected wright?
also, most of us hang plants to dry after they are pulled, so,,,anything in the roots n stem go into the buds wile hanging by gravity,,so having the lights out for days after flower is useless???
i hope i understand this correctly its all about the spectrum of light at the 12/12 sced that produces more or less trics and complete darkness does nothing...
however,, lights out for 24 hours prior to 12/12 will make the plant show sex sooner? that wasnt covered in that link doc...thanks

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Dr. Who said:

Yup
Yup
? ? ? Roots to Stems ? ? ? Nope
Wow,,,ah,,,confused........mmm.....not tric's,,,,,spectrum and time = onset of flower....No moon dark - - - -
Yup

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TheChemist77 said:

doc, as for day time lighting, 18/6, 20/4 or 24/0
in my tests the only difference i noticed was more stretch with more dark, so 24/0 gets close nodes wile 18/6 gets a little stretch between nodes and the 20/4 is a medium point..
only other thing was male to female ratio from seed, i found over hundreds of seeds planted i always get more females than males in a 10 pack even in male friendly rooms. but w/ the 18/6 light i always seem to get more females than under 20/4 or 24/0.. i assume seeds are prompted by enviroment rather than pre determind but cant prove it..like allagator eggs..whats ur chice on day light sceds? i always use 24/0 over clones then once rooted go to 20/4 till flower..
have u noticed any differences in day light sceds?

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Dr. Who said:

I never run 24/0! You will get far healthier plants with at least 20/4.....The normal hormone production is dependent on some night....That's not to say that Canna will not grow at 24/0.....It's just simply put, better for the plant to have a lights out or night period.

Btw, I run 18/6 veg. I am about to test the 12on - 5 1/2off - 1on - 5 1/2off "gas light" system...I have a very well controlled enviro so I don't have to worry about other variations effecting things so I can get a true perspective of this method on cannabis. (This is used to grow several popular seasonal flowers for the home market, like poinsettia's in greenhouse's.)
12/12 to 6/18 progressive bloom.

Your use of the word "environment" is not "technically" correct in this use....
If the plant is keep in (or very close to) it's natural circadian rhythm. It will produce it's hormones in the ratio's that effect the plant naturally.....When you disrupt this circadian rhythm, you will change the hormones produced and the type and time of too. This then is easy to see why you get these differing Male/Female ratio's.

Doc

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Dr. Who said:

I never run 24/0! You will get far healthier plants with at least 20/4.....The normal hormone production is dependent on some night....That's not to say that Canna will not grow at 24/0.....It's just simply put, better for the plant to have a lights out or night period.

Btw, I run 18/6 veg. I am about to test the 12on - 5 1/2off - 1on - 5 1/2off "gas light" system...I have a very well controlled enviro so I don't have to worry about other variations effecting things so I can get a true perspective of this method on cannabis. (This is used to grow several popular seasonal flowers for the home market, like poinsettia's in greenhouse's.)
12/12 to 6/18 progressive bloom.

Your use of the word "environment" is not "technically" correct in this use....
If the plant is keep in (or very close to) it's natural circadian rhythm. It will produce it's hormones in the ratio's that effect the plant naturally.....When you disrupt this circadian rhythm, you will change the hormones produced and the type and time of too. This then is easy to see why you get these differing Male/Female ratio's.

Doc

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TheChemist77 said:

u run clones under 18/6 too? ive always run clones under 24/0, but if they will root just as well or just as fast under 20/4 or 18/6 im up for saving on my electric bill. it would also save me on space as right now i have 3 rooms, 1 24/0 for clones, 1 at 20/4 for veg and my 12/12 bloom room.. i would love to have 2 rooms, just a 20/4 room for clones and veg and my bloom room..maybe ill switch to 18/6 if clones will take under it..it would deffinatly save me some money..

also i just wondered if u have ever tried the difference in 18/6, 20/4 and 24/0
my tests showed no big differences other than closer nodes,, even total height was within an inch or 2, the taller always in the 18/6 and 20/4 rooms.. i actually prefer the darkness room for veg as nodes are a little further apart making cloning much easier..
i have a clone king airo cloner and clones normally root in 7-10 days w a 100% success rate so far.. im really interested in trying my cloner under 18/6 to see if they take root at the same rate..
question,, is darkness in any way good for rooting? as i know having at least some dark is good for vegitating plants??

ps, keep me up to date on how the new light sced works for you,, ive heard about it in a few forums, but have always just used 12/12 for flower, and regular 18/6 n so on for veg...but ive heard the new sced not only saves money on lighting in veg, but also makes plants show gender earlier and begin flowering sooner once in bloom..

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TheChemist77 said:

so u also believe seds are NOT predetermined but predisposed?? or is it just that a single mother plant will create more female seeds than male on a single plant??

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Dr. Who said:

Yer just full of questions eh? No prob man.

Yes I run any plant from seed or clone at no more then 20/4 and clones get 18/6. Why 3 rooms? Vegging plants aren't really effected negatively by 20/4 if that's your choice....I simply clone and raise seedlings in my vegging area.

The closer/more node thing is on a scale that does not warrant spending the money on the added electricity in my case. In all actuality, You will get stronger more healthy plants by running a dark period in veg. While Cannabis does not need a lights out period. There is simply to much going on in the plant during a lights out period, that I feel it is detrimental to the plant to not have one!

You really nailed a good question there. " Is darkness in any way good for rooting?"
You bet it is! That is one of the main reasons I always have a dark period in my grows.



Correct!

I have a very particular method of germinating and early growth period.
Throw the seeds in the freezer for a day and proceed with the "hatch" (I do use a seed mat that ups the ambient room temp of the germination and seedling tray by 10F). I then follow an 18/6 lighting period.

Doc

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