i found this while browsing around
has anyone ever tried this???


: joint:
The only photoperiod manipulation from years of experiments that offered discernible improvements was the following photoperiod adjustment made for 1 or 2 calendar weeks at the point of maximum flowering rate: Daylength of 21 hours, 36 minutes with a dark period of 12 hours. To accomplish this, you need a 7 day, 24 hour digital timer. During a 7 day calendar week on Earth, the "sun" only cycles 5 times. This permits easily switching back to the regular 12/12 at your discretion. You may want to only alter during peak flower production to stimulate the plant's metabolism. Using this photoperiod throughout the flowering cycle will cause this:

A variety that takes 49 days of 12/12 to mature, won't see 49 - 12 hour dark periods under 21:36/12 until almost 10 calendar weeks have passed.

The total increase in light energy is almost 80%, which will produce larger yields, if all of your other enviromental conditions are kept optimal.

The total increase in flowering period is only 40%, half the potential room for improvement. This means you don't have to be perfect to win out.

Selective application of the 21:36/12 photperiod for only 1 or 2 weeks extends the wait only 2 to 4 Earth days, which makes up the missing 2 complete day and night cycles each week on Planet Ito. This permits the additional light energy to be provided without purchasing additional equipment or overloading existing circuits, which maximizes the existing system's capabilities. The main advantage is that matched with co2 and optimal nutrition, the plants metabolism will increase dramatically. I have only successfully tested this photoperiod for two weeks. The potential for a net increase of 40% over the entire cycle (80% increase in light energy vs. 40% longer wait) is worthwhile. Don't be afraid!

Day 1 - Sunday, 6:00am til Monday, 3:36am
Day 2 - Monday, 3:36pm til Tuesday, 1:12pm
Day 3 - Wednesday, 1:12am til Wednesday, 10:48pm
Day 4 - Thursday, 10:48am til Friday 8:24am
Day 5 - Friday, 8:24pm til Saturday 6:00pm

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LATAS

sounds interesting i wonder if it really works. if im getting this right you give them 36 hrs of light and then 12 hrs of darkness and then 36hrs again? would be great if there was a time laps video or some pics of the buds etc.

what week in flower is this applied?

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"i really need help,
i plan to grow weed outdoors i know its possible but i need to know how will i power the lights."

no i think its 21:36 on and 12 off,stretching the flower time out so it can yeild more i.e 8 weeks takes 10

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LATAS

i suppose the beginning

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LATAS

It would probably confuse the plant if you did it right away. It takes a plant at least a week to realize it's in flower, so if it wasn't getting the dark cycle in a timely enough fashion, it may never decide to flower, but I'm not sure, my Phd is in acting, not Rocket Surgery.

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Loose lips sink ships.

ive read bout this but not quite the length of time so long as 21:36 only like 12/14 but seeing as most of the plant activity happens when the lights are off it only stands to reason longer dark = longer buds ive been thinking about trying this for a while but to truly know we need a side by side comparison 2 tents say same strain nutes medium etc 2 light cycles.

if i had a second tent id have done it by now and im changing mny strains every month or so so its not really an option.

anyone else with two grow areas that would be able to try this id be real interested to see the results.

rep moash

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http://www.rollitup.org/grow-journal...boy-style.html

For simplicity rather than 5 nights a week, someone could do less and 6 nights a week...

6 hours on 12 hours off (total of 6 28 hour days during the week).

Every day, you would just shut off the lights 4 hours later. It wouldn't take as long as with a 21:36/12 cycle to reach the end of flowering (only about 15% longer, as opposed to about 40% longer)

that could be...or it will take longer to start flower thus increasing time to elongate

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LATAS

i would like to try too but only got one closet to use
maybe 2 diff grows with same strain and conditions will give a round about answer and its more reasonable

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LATAS