Is 12/12 Necessary or Maybe 15/9 -14/10 -13/11

sparkafire · May 3, 2011

This just popped into my head and I wondered as long as the plant cycle was tricked into thinking that it needed to flower why not try to maximize the day light hours? Is there anyone out there that has experimented with light times and the effects of it? If you could get the plant to flower and still get 13 or 14 hours of light that's a lot of extra time in the sun.

Thoughts?

yoquierotacobell · May 3, 2011

12/12 is a guideline. Different strains will react differently.

lince · May 3, 2011

Haven't tried it indoor but outside I had plants flowering under 14h of light, but outside the hours of light keep going down. Not sure what would happen if you keep them under 14h for a long time, they may take quite long to finish. Would be a nice experiment.

TheLastWood · May 3, 2011

Everyone says 12/12 because it is universal, it will flower pretty much all photoperiod plants. Butdifferent strains will flower under more light than others. That's up to you to find out how much night time your plants need.

sparkafire · May 3, 2011

TheLastWood said:
Everyone says 12/12 because it is universal, it will flower pretty much all photoperiod plants. Butdifferent strains will flower under more light than others. That's up to you to find out how much night time your plants need.

Yeah I figured that as well it being a universal number, but I wonder if it is a trigger mech that trips at a certain point allowing for full flower development say maybe within a small 15 min window? If it is a hard trigger and you could get the same flowering pushing the limits on how much light you give them you could end up running a few more hours a day of light shortening the grow cycle so by adding 1 hour extra could technically take off 5 days off the cycle on a 60 day flower is my math right or is there another way to look at it?

lince · May 3, 2011

sparkafire said:
Yeah I figured that as well it being a universal number, but I wonder if it is a trigger mech that trips at a certain point allowing for full flower development say maybe within a small 15 min window? If it is a hard trigger and you could get the same flowering pushing the limits on how much light you give them you could end up running a few more hours a day of light shortening the grow cycle so by adding 1 hour extra could technically take off 5 days off the cycle on a 60 day flower is my math right or is there another way to look at it?

Not sure if I understood your last post, are you saying that you want to make the flower cycle shorter by increasing the hours of light ?

sparkafire · May 3, 2011

I guess that would be the goal is to shorten the cycle but I do not know enough ( nothing) about plant chemistry to say whether or not there is a a hard trigger that flips the plant completely to flower. We all know in nature the days get shorter as time goes on but the question I guess would be the plant chemistry and the light triggers that cause the flowering.

lince · May 3, 2011

I think it works just the opposite way. the less hours of light you give the plant the sooner it will finish flowering and the more hours of light you give her, the longer she will take to finish. Never tried it before but I'll be doing it in my current grow. Will use less than 12h of light to try and finish earlier because I haven't got much time. If you are interested, I'll be giving info about it. Link in my sig

penguinking · May 3, 2011

I have experimented with cutting down my days by 25%. I would have the light ON for 6 hours OFF for 12. Making an 18 hour day. Since this can be really tricky to do with a 24 hr timer i bought a light controller that has the capability of keeping them on the correct schedule without me having to change the settings everyday. It cut off 2 weeks of the flower cycle.

sparkafire · May 3, 2011

That's the question....... is there a trigger in the plant chemistry that flips the plant to full flower mode without losing those few precious hours of light. If there is no difference between 10 hours VS 14 as far as forcing the flowering goes wouldn't the 14 hour finish sooner? I am courius to see if the shortning the light cycle causes the plant to mature faster but my thought is to make it as long as possable so the plant has more time to grow. Shorter light time = less time to grow = longer finish? Checking out your experiment now.

sparkafire · May 3, 2011

penguinking said:
I have experimented with cutting down my days by 25%. I would have the light ON for 6 hours OFF for 12. Making an 18 hour day. Since this can be really tricky to do with a 24 hr timer i bought a light controller that has the capability of keeping them on the correct schedule without me having to change the settings everyday. It cut off 2 weeks of the flower cycle.

2 weeks???? WOW :clap:

This is what I am talking about! So you have lights on for only 6 hr with 12 off then 6 on again hmmmmmm interesting
..

Cali.Grown>408 · May 3, 2011

the more light the faster she flowers..thats y plants grown outdoor take so long, cloudy days block the sun and sometimes the plants get 0 sunlight the whole day..when u give your plant more light it forces it to work "overtime"..i wouldn't go over 13 hours of light though..i personally add 45minutes to and hour of light indoors the last 2weeks, it forces the plant to finish faster and buds get slightly denser.

Cali.Grown>408 · May 3, 2011

penguinking said:
I have experimented with cutting down my days by 25%. I would have the light ON for 6 hours OFF for 12. Making an 18 hour day. Since this can be really tricky to do with a 24 hr timer i bought a light controller that has the capability of keeping them on the correct schedule without me having to change the settings everyday. It cut off 2 weeks of the flower cycle.

Ur full of shit...6 hours of light a day LOL who ever believes that and trys it deserves what they get

lince · May 3, 2011

penguinking said:
I have experimented with cutting down my days by 25%. I would have the light ON for 6 hours OFF for 12. Making an 18 hour day. Since this can be really tricky to do with a 24 hr timer i bought a light controller that has the capability of keeping them on the correct schedule without me having to change the settings everyday. It cut off 2 weeks of the flower cycle.

That's a nice one (+rep) but a little different. What you did was the days shorter so for you she finished at day 46 but for the plant it was day 61 because her days had only 18h hehe

What about the yield ? it may have been hardly affected with so little hours of light, was it ?

sparkafire · May 3, 2011

Cali.Grown>408 said:
Ur full of shit...6 hours of light a day LOL who ever believes that and trys it deserves what they get

Easy Chulajuana .... What if this guy really was cutting off 2 weeks off his grow? Have you tried it? Just wanted to get some ideas of what lighting schedules people were experimenting with no need to cal him out on it.

FarmerJJ · May 3, 2011

yes you can add daylight hours as long as the darkness time is still 12 hours, but you could have problems with resin production because there is not enough dark time for the plant to build up the trichs that are broken down from the daytime

sparkafire · May 3, 2011

lince said:
That's a nice one (+rep) but a little different. What you did was the days shorter so for you she finished at day 46 but for the plant it was day 61 because her days had only 18h hehe

What about the yield ? it may have been hardly affected with so little hours of light, was it ?

Yeah my thoughts as well did the yield suffer?

sparkafire · May 3, 2011

FarmerJJ said:
yes you can add daylight hours as long as the darkness time is still 12 hours, but you could have problems with resin production because there is not enough dark time for the plant to build up the trichs that are broken down from the daytime

Please elaborate on this. What experience are you drawing from?

Cali.Grown>408 · May 3, 2011

the more light the faster she flowers..thats y plants grown outdoor take so long, cloudy days block the sun and sometimes the plants get 0 sunlight the whole day..when u give your plant more light it forces it to work "overtime"..i wouldn't go over 13 hours of light though..i personally add 45minutes to and hour of light indoors the last 2weeks, it forces the plant to finish faster and buds get slightly denser.

Cali.Grown>408 · May 3, 2011

sparkafire said:
Easy Chulajuana .... What if this guy really was cutting off 2 weeks off his grow? Have you tried it? Just wanted to get some ideas of what lighting schedules people were experimenting with no need to cal him out on it.

with 6 hours of light LOL hahaha you cant be serious..

Is 12/12 Necessary or Maybe 15/9 -14/10 -13/11

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