Any one had good results with longer dark periods then 12 hours??
- Thread starter audi07
- Start date
use 12 hours for the most time, say flowering time is 64 days.. last week first four days 11 hours and last three days 10 hours... the plants should think that their life is coming to an end soon so they will produce bigger buds due to the pfr hormone increase thats my guess, i will try it but got like 30 days to go before i can tell you but on the other hand i got nothing to compare to .. but this is my logic.
HydroBandits
Well-Known Member
Id like to know the results of this. your logic sounds right on to me
Hobbes
Well-Known Member
When you reduce your light time you'll reduce your yield and potency. You can compensate with CO2 and/or extra light + UVb light.
Here's a thread on running your grow on an 18 hour day with only 6 hours of light, 12 hours dark. The theory is that the more dark periods the quicker the harvest, but less yield.
In one week with a normal 12/12 cycle a plant has 7 dark periods to produce THC, with an 18 hour day the plants have 9 dark periods in 7 days.
Reducing the light time each day (week) also sounds like it will speed ripening but it will also reduce yield and potency, so compensate.
.
https://www.rollitup.org/advanced-marijuana-cultivation/148819-growing-18-hour-day-night.html
.
Here's a thread on running your grow on an 18 hour day with only 6 hours of light, 12 hours dark. The theory is that the more dark periods the quicker the harvest, but less yield.
In one week with a normal 12/12 cycle a plant has 7 dark periods to produce THC, with an 18 hour day the plants have 9 dark periods in 7 days.
Reducing the light time each day (week) also sounds like it will speed ripening but it will also reduce yield and potency, so compensate.
.
https://www.rollitup.org/advanced-marijuana-cultivation/148819-growing-18-hour-day-night.html
.
smokethadro
Active Member
i am short on space and a few parts of plants finished early..i cut them in half basically and let the other half finish...the other halfs are all cloudy trichs and im waitin for at most 50/50 cloudy/amber. i have a growtent and wanted to hang them in there so i turned the lights off for the remaining time...its been 3 days of no light and hopefully they will be done in another 3 or 4 days....any problems from doing this? doing a dwc with 2 ww feminized
thiCbuds
Active Member
I'm currently increasing my light time from 12/12 to 13/11 from Week 3-5 of flowering. Adds an extra hour of light which is supposed to increase size and yield without stressing the plant. I'll bring back the light schedule to 12/12 after week 5 and finish flowering on that schedule.
born2killspam
Well-Known Member
I've read that you can knock about 2hrs off the required time to induce a flowering response by irradiating with fairly intense far red (>700nm) light..
Incandescents produce more far-red than red, so you could probably push the equilibrium and speed up the dark cycle requirements by illuminating with incandescents for a few minutes just prior to lights off..
Or, for the ultra-rich, get something like this, but bigger:
http://www.asahi-spectra.com/opticalfilters/syousaik2_ver2.asp?key=ZBPA730
And use it to filter incandescent light through the entire day (light and dark) when you want the plants to flower.. That could reduce the dark requirement tremendously, but the filter would cost thousands..
Moonlight carries a large proportion of far-red radiation, and its been found that moonlight can enhance flowering response of short-day plants..
Incandescents produce more far-red than red, so you could probably push the equilibrium and speed up the dark cycle requirements by illuminating with incandescents for a few minutes just prior to lights off..
Or, for the ultra-rich, get something like this, but bigger:
http://www.asahi-spectra.com/opticalfilters/syousaik2_ver2.asp?key=ZBPA730
And use it to filter incandescent light through the entire day (light and dark) when you want the plants to flower.. That could reduce the dark requirement tremendously, but the filter would cost thousands..
Moonlight carries a large proportion of far-red radiation, and its been found that moonlight can enhance flowering response of short-day plants..
HowardWCampbell
New Member
Any effect on the amount of time it took them to finish?
Roseman
Elite Rolling Society
I only changed the last week of Flowering, so I 'm not sure.
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