The 12-12 From Seed Thread

[syphex]

Its definatly beneficial if a fast flowering strains is used.I can say a lot of time I use 20 hrs of light on seedlings for about a week then down to 18 hrs of light for the next few weeks,after about 3weeks switch to 12/12.Like 12/12 from seed but with a kick.
Flowering can't be induced on a plant,it has to be mature enough,alternating nodes doesn't always occur first.
ONE MORE TIME.......12/12 fs is the best way to have a perpetual grow with a single grow space or to identify males and females as quickly as possible.

I apologize because im not good with words or the best at explaining things.I just hope you have gained something from this thread like I have.peace

Thanks for taking the time to reply after I was somewhat rude. I am glad you recognize that a plant cant be forced into flowering. However, you say you first give the plants 20 hours and work your way down... this is not what the name of the technique implies. 12/12 FROM SEED, means you do it straight away. How can you say its 12/12 from seed when you are giving it 20/4 from seed lol its the same as any other grow just small veg time.

I have been using the mainlining technique to get the 2.5 months of veg in... they are still less than 1 meter tall now in flower. I want to try increase my plant numbers and do single-cola plants. If I use 18/6 lighting in veg instead of 24/0 how much sooner would you GUESS that I could start flowering? Because I have a 180cm height limit and this OG GTH#1 strain nearly triples in height at flower from what I've heard.

Its difficult for me to determine how much they stretched this time around because they suddenly started stretching under 24/0 just before the flip to 12/12.

@SirGreenThumb:

I cant believe some plants mature within a week and a half thats insane!! No offence but are you sure they arent hermies of some kind? :S I waited 2.5 frickin months on 24 hour lighting (partly responsible I know) to see the first white hairs. Oddly enough too the females (5/6) all showed sex before the male was even recognizable. Oh and boobs (. Y .) :F

 

[Javadog]

If I use 18/6 lighting in veg instead of 24/0 how much sooner would you GUESS that I could start flowering?

This is an interesting question.

Hmmm...

18/6 represents a point later in the growing year than 24/0

Is it that a shorter day will result in plants that switch to flower
without going to 12/12, and that this forcing will come earlier
with an 18/6 schedule?

(sorry if this is something that I should already know ;0)

You see, the question seem odd otherwise....24/0 would lead to
faster growth than 18/6.....so going the other way will never be
sooner.

Or else I need fixing. I believe that the jump up is not proportional
to the increase in the light period, as plant benefit from a dark period
and will not be just frozen when the lights are off.

Lost, I am. :0)

JD

 

[syphex]

If I use 18/6 lighting in veg instead of 24/0 how much sooner would you GUESS that I could start flowering?

This is an interesting question.

Hmmm...

18/6 represents a point later in the growing year than 24/0

Is it that a shorter day will result in plants that switch to flower
without going to 12/12, and that this forcing will come earlier
with an 18/6 schedule?

(sorry if this is something that I should already know ;0)

You see, the question seem odd otherwise....24/0 would lead to
faster growth than 18/6.....so going the other way will never be
sooner.

Or else I need fixing. I believe that the jump up is not proportional
to the increase in the light period, as plant benefit from a dark period
and will not be just frozen when the lights are off.

Lost, I am. :0)

JD

I believe that the ratio of darkness a plant receives is directly proportional to the production of the flowering hormone. Meaning that 18/6 will show sex sooner than 24/0, however some people say that 24/0 causes the hormone to build up and then suddenly explode when changed to 12/12 but this is not my experience. Also marijuana is not the type of plant that NEEDS a dark period(see C3 and CAM plants)... 24/0 lighting will cause faster growth and tighter node spaces but may not be as efficient as 18/6, meaning that you use more power for what you get out of it. The question then becomes which is better... higher watts at 18/6 or less watts at 24/0? And what difference in watts? I don't know the answer to this.

The dark period is a respitory phase and by using 24/0 lighting it forces the stomatas to remain open longer (as opposed to closing during the day)

Also I notice your growing some OG's and a Train strain. My strain is a cross between ghost OG and nevilles wreck and is the winner of last years cup. Whats the cheese like?

But but but... Just give up the doubters haters and flamers will always be around. They aren't gonna take the time to read this thread or they wouldn't exist in the first place.

You sound like one of those "if it aint broke dont fix it" fools. I am striving for optimum conditions, which is not achieved by chucking a seedling into flower... thats just plain retarded, so why would I waste my time reading a whole thread full of retards? Veg until sex shows, minimum. I dare anyone who disagrees to debate this with me.

 

[Javadog]

[video=youtube;1sONfxPCTU0]http://www.youtube.com/watch?v=1sONfxPCTU0[/video]

Supchaka's got great stuff to share. Let's keep it cool!

JD

 

[B166ER420]

I have a 2x5x5 closet always running 12/12.I also have a small box 1.5x2x4 that i use for veg.I've always had males show their stuff first......Yes,2.5weeks has been the earliest.Females tend to mature later.Its mainly genetics that determines yield and size.....and how long you veg.
I started to do 12/12 from seed to try and maximize yield while lowering expenses.12/12 fs I use cut 3ltr bottles for pots,very little soil is used.I could fit 6 under each light,i only feed water and molasses/Epsom.If I had fem seeds or clones I would have outstanding results.....at an 1.5z per 3ltr,12/12fs....I could possibly get over a lb per harvest using only 24-23watt cfls.Using reggie photperiod seeds sucks.The first time I tried a big harvest,I germed 28 seeds and got 7 females....not good.
....not 12/12 from seed
...12/12 fs,i hope this one wins the solo cup comp....it'll be close






Edit:LOL...this was definitely a wake and bake post?????????

 

[zVice]

You know nothing Jon Snow

You sound like one of those "if it aint broke dont fix it" fools. I am striving for optimum conditions, which is not achieved by chucking a seedling into flower... thats just plain retarded, so why would I waste my time reading a whole thread full of retards? Veg until sex shows, minimum. I dare anyone who disagrees to debate this with me.

“Never argue with an idiot. They will only bring you down to their level and beat you with experience.”


― George Carlin

 

[chinese stinky]

hey guys,

first time grow here, this one smokes real nice i was lucky to get some seeds in a few nugs i purchased

plant is a nice indica strain approx 33 days old 10 days into flower and recently transplanted into a nice big pot (was rootbound in a 4L pot) foliar fed silicon and PH'd water in between foliar sprays of 5-14-16.3 nutes, feeding with manutec bloom booster, soluble potash, RHINO SKIN, and SEASOL seaweed concentrate, these plants absolutely go crazy with seaweed nutes, this thing grew 2 inches overnight!!!

buds are a bit small but im hoping they fatten up more when i move up to a 400w HPS, i have 3 other seedlings 12/12 in the same tent

enjoy!!

 

[Dr Pepper Bud]

Does anyone here have any experience with 12/12fs with a sativa dominant plant? I bought 6 fem Raspberry Cough seeds from Nirvana and didn't notice it was 70% sativa until after it was too late to switch to a more indica heavy strain. I have a 600w hps with only about 2 ft of height before I need to worry about the plants distance to my light. I figure even with 12/12 fs I will probably need to train, but I plan on trying out LST. First grow will be 6 plants 12/12fs 4 of the Raspberry Cough and then two DinaFem freebie seeds that are indica dominant and should finish a few weeks before the raspberry cough. I plan to do a 12/12 fs perpetual grow and will probably stick to one strain for a while after this grow. Any input is appreciated. I'd like to get around 1.5oz per plant minimum for this grow.

Seeds should be in the ground and sprouting within a week!!

Misc Grow Info: 2 gallon hempy's running 100% perlite using maxibloom lucas formula

 

[munchies7]

well with any plant that will become larger than ur room u have to train it. just train it before its to late, i have to train em coz im moving on a couple of weeks.. so i will be using boxes.. i will probably tie mines tomorrow about 2 weeks old.

Does anyone here have any experience with 12/12fs with a sativa dominant plant? I bought 6 fem Raspberry Cough seeds from Nirvana and didn't notice it was 70% sativa until after it was too late to switch to a more indica heavy strain. I have a 600w hps with only about 2 ft of height before I need to worry about the plants distance to my light. I figure even with 12/12 fs I will probably need to train, but I plan on trying out LST. First grow will be 6 plants 12/12fs 4 of the Raspberry Cough and then two DinaFem freebie seeds that are indica dominant and should finish a few weeks before the raspberry cough. I plan to do a 12/12 fs perpetual grow and will probably stick to one strain for a while after this grow. Any input is appreciated. I'd like to get around 1.5oz per plant minimum for this grow.

Seeds should be in the ground and sprouting within a week!!

Misc Grow Info: 2 gallon hempy's running 100% perlite using maxibloom lucas formula

 

[Dr Pepper Bud]

well with any plant that will become larger than ur room u have to train it. just train it before its to late, i have to train em coz im moving on a couple of weeks.. so i will be using boxes.. i will probably tie mines tomorrow about 2 weeks old.

Yea I think LST will work better for me since I will be doing a perpetual with different strains once I find one constant strain to grow for a few months I might try to find a way to incorporate a scrog so it is easier to train, but for now LST should be fine i've been researching it i think I will start somewhere around 2 weeks as well assuming the plants are up to it by then. I just wasn't sure if a mainly sativa strain would yield significantly less than the mainly indicas most people seem to use with 12/12fs

 

[nameno]

Dr Pepper,That 1 and blackjack from nivarna are about the same by the reading,I just finished 1 of them I think Blackjack it was perfect for me,if I ever grow another one that will be in the garden.5-29 till 8-29

 

[champaign]

Here's my Northern Lights. I planted the seed on 7/5. I just went into full on flowering about a week ago. I topped just above the 2nd node and did a mixed mainline/LST from there. From all the flowering spots, I think I'll get a very nice harvest from it when it's done. I've also got a Barney's Tangerine Dream and Barney's Vanilla Kush that I planted late last month.

 

[Dr Pepper Bud]

Dr Pepper,That 1 and blackjack from nivarna are about the same by the reading,I just finished 1 of them I think Blackjack it was perfect for me,if I ever grow another one that will be in the garden.5-29 till 8-29

you did a 12/12fs grow with black jack? what was your lighting/yield?

 

[shadyslater]

my blue hash (last years xmas weed) 12/12fs ended up 2foot tall grown under a cfl

 

[ChroniklesOfTheDankSide]

Oh wow man, im currently trying my first 12/12 cycle. Glad to see someone can do it without autos! makes me real optimistic about my grow!

 

[shadyslater]

its good for just getting some out lol
iv got a blue widow seedling in doin 12/12fs atm runnin with my main-lined blue rhino

 

[ChroniklesOfTheDankSide]

How many months did it take to grow that blue hash plant? o.o that's definitely the size im hoping for with mine.

 

[shadyslater]

3 month'ish mate well just over if i remember correctly
my other 12/12fs grow (blue widow and a red cherry berry they both hit 2feet too

 

[ChroniklesOfTheDankSide]

now, when you say 12/12fs, does fs mean Full Spectrum?
Also, How long until harvest?

I've got 7 plants; im gonna try doing a 12/12 cycle with CFL's. Just trying to get a general feel/input for this method, since ive never done an indoor grow before :c

But damn man, 3 months, 2ft tall and the budding looks really nice so far.

I'm about 1 week in to my grow so far and seeing all these other growers using the method im trying really makes me super optimistic about what im trying to accomplish during this grow.

 

[shadyslater]

125w dual spectrum cfl it was 12/12 right from the go
the b/h in the pic was last year mate. then the other 2 was earlier this year
its a cool method

i'd recommend not toppin doin 12/12fs though as while the plant recovering its not really growing and with cfl's the recovery time from toppings a bit longer.
im only doin a couple of plant 12/12fs now cos my main-line projects 5 weeks into flower and i want some buds for xmas (note dont leave santa a joint out he wont partake lol)
when these start aux branching im removing them so i only have cola's lol (space reasons)