12/12 vs 10/14

[bryan oconner]

I switched over to 10/14 after I started to bitch about my e bill . and reading a article on here . I was thinking what the f why not . my results they finished about 2 weeks sooner and pulled the same and the quality is actually better then ever . I don't know if its the 10/14 or the colder environment I have them in now from 80f to 65to 75f more thin likely the quality from colder then 80 . but damn 2 weeks sooner . I just wanted to share I don't rem who told me about going to 10/14 but thank you for posting it I do thank you a lot .!

 

[papa canna]

I doubt it is from the dark. Those 5 degrees makes a big difference imo. I pulled much better weight from 75f than I did from 80f. Next time I would try keeping the 75f and maintaining 12/12. I doubt 2 hours per day makes a big difference in bill. I'm not big on math but that's what, 10%?

 

[Carolina Dream'n]

I doubt it is from the dark. Those 5 degrees makes a big difference imo. I pulled much better weight from 75f than I did from 80f. Next time I would try keeping the 75f and maintaining 12/12. I doubt 2 hours per day makes a big difference in bill. I'm not big on math but that's what, 10%?

For people in non-legal states, 10% power savings in the growroom is huge.

Shoot even in legal states.

 

[Kingrow1]

Less light equals less yeild, if 10/14 yeilded more it would be the standard not 12/12. I also doubt that lower light periods will finish a plant quicker.

 

[bryan oconner]

Less light equals less yeild, if 10/14 yeilded more it would be the standard not 12/12. I also doubt that lower light periods will finish a plant quicker.

not the case . for both . the yield was the same and it did finish quicker . I thought it would be greatly reduced as well . I was reading a lot of articles had to try it . here is an article . could not find the one I wanted to post . https://sensiseeds.com/en/blog/flower-cannabis-plant/

 

[Kingrow1]

not the case . for both . the yield was the same and it did finish quicker . I thought it would be greatly reduced as well . I was reading a lot of articles had to try it . here is an article . could not find the one I wanted to post . https://sensiseeds.com/en/blog/flower-cannabis-plant/

Somthing thats come up before and should be a lot of posts on it but if you think less light can turn an 8 week flowering strain into a 6 or 7 week one with no loss of yeild then im pretty sure that would be an amazing advancement. Ive run 10/14 loads of times and didnt speed up anything.

 

[Afgan King]

I doubt it is from the dark. Those 5 degrees makes a big difference imo. I pulled much better weight from 75f than I did from 80f. Next time I would try keeping the 75f and maintaining 12/12. I doubt 2 hours per day makes a big difference in bill. I'm not big on math but that's what, 10%?

Yup yup grow in 71° day 61° night and shit gets magical put it at 35% humidity too

 

[Dr. Who]

Yup yup grow in 71° day 61° night and shit gets magical put it at 35% humidity too

Ambient temp measured at what height?
Whats the canopy "felt" temp?

You know what I'm getting at!

I might use that RH with metered watering of synthetic feeding.

I prefer setting my dehuey's at 40% and using the 3% override with my organics.....Too much nutrient uptake if I set at 35% for my soils...that seems to be my best set point is 40-42% for RH... I run digital German dehuey's with condensate pumps built in..

I don't see much difference in going to 75F as an ambient upper limit...So I guess I'm asking if you see that much of a difference with 4 deg.?

Say, I'll post a few shots of that GG4 (starting 8th week) after your reply.....Gotta say with the way I'm running it first time out. I'm VERY pleased with the results so far!

Thanks.

 

[RM3]

Throw in Gas Light Veg and it gets even better

I've been runnin 10:30/13:30 for years

 

[Jimdamick]

When I was using only one 1000 watt light I ran 12/12 as the cost of energy was negligible, but as I increased the amount of lighting it turned out to be very expensive. I had to do something as I was going broke and my bills from the energy company were getting crazy and I was getting paranoid. I said fuck it and started to run 10/14 to see how that would affect my grow and my energy bill. It turned out my bill went down a good amount and the bud quality didn't seem to be affected. I never went back to 12/12 and my plants never seemed to mind and had more cash in my pocket. So, your not going to get more or bigger bud, but your cost will go down if you are running a lot of plants.

 

[bryan oconner]

could be a fluke in the room some times they just finish faster then they should . all temps measured @ plant bud height .

 

[GreenSanta]

I have always wanted to try each light in the grow room on a different timer, for say 10 hours or even 8 or 9 hours but all staggered so that the total amount of light or residual light in the grow room to be 12 hours. Thanks for sharing ur experience everyone.

 

[Dr. Who]

Say, I'll post a few shots of that GG4 (starting 8th week) after your reply.....Gotta say with the way I'm running it first time out. I'm VERY pleased with the results so far!

Thanks.

@Afgan King @RM3 @Olive Drab Green (you asked for some pics once - nicely too - here ya go)
So a, here we are then.....GG4 at exactly 8 weeks today.
Main had some Foxtailing as it's in an isolation tent with some higher temp/RH running sativa's



Next is some side branch shots - Nice!




HERE is a shot of the lower "non" lollypopped area of the GG.......See kiddies, grow right and you don't get "airy popcorn buds" !!! and you don't need to remove leaves or what not to "get light to them" so they grow and fill out nice and dense!



Here is the other resident strain of that isolation tent (They're in a breeding op. I don't want to take chances and also run a differing environment outside it).. Black Russian



Now all you doubters have the rare look into one of my grows......so bite me !!!

 

[RM3]

Ambient temp measured at what height?
Whats the canopy "felt" temp?

You know what I'm getting at!

I might use that RH with metered watering of synthetic feeding.

I prefer setting my dehuey's at 40% and using the 3% override with my organics.....Too much nutrient uptake if I set at 35% for my soils...that seems to be my best set point is 40-42% for RH... I run digital German dehuey's with condensate pumps built in..

I don't see much difference in going to 75F as an ambient upper limit...So I guess I'm asking if you see that much of a difference with 4 deg.?

Say, I'll post a few shots of that GG4 (starting 8th week) after your reply.....Gotta say with the way I'm running it first time out. I'm VERY pleased with the results so far!

Thanks.

For many years I have taught to adjust temp/humidity by using the Heat Index

This is the calc I use http://www.easysurf.cc/cnver16.htm

Your not seeing much difference because you are close, I like the heat index to be 4 points above ambient. With your 75 degrees at 40 % rh your heat index is 77.49. At 42% rh it's 77.55

with an ambient of 71degrees and rh of 35% like @Afgan King is runnin his heat index is 76.66 which is a tad high but better to be higher than lower. Absolute sweet spot is 72 degrees with a 33% rh giving a heat index of 76.55

I know a lot like to use VPD but the charts are plant specific and I've never seen one based on cannabis? I figured out the heat index thing years ago by trying every temp/humidity combo and watching plant response

 

[Dr. Who]

For many years I have taught to adjust temp/humidity by using the Heat Index

This is the calc I use http://www.easysurf.cc/cnver16.htm

Your not seeing much difference because you are close, I like the heat index to be 4 points above ambient. With your 75 degrees at 40 % rh your heat index is 77.49. At 42% rh it's 77.55

with an ambient of 71degrees and rh of 35% like @Afgan King is runnin his heat index is 76.66 which is a tad high but better to be higher than lower. Absolute sweet spot is 72 degrees with a 33% rh giving a heat index of 76.55

I know a lot like to use VPD but the charts are plant specific and I've never seen one based on cannabis? I figured out the heat index thing years ago by trying every temp/humidity combo and watching plant response

Hmm, minor soil nutrient adjustment and drop my RH and temps a bit to try that out...76.55...I like! Gunna give it a shot with this soil formula first,,,just to see what if anything I might need to adjust.

 

[Afgan King]

For many years I have taught to adjust temp/humidity by using the Heat Index

This is the calc I use http://www.easysurf.cc/cnver16.htm

Your not seeing much difference because you are close, I like the heat index to be 4 points above ambient. With your 75 degrees at 40 % rh your heat index is 77.49. At 42% rh it's 77.55

with an ambient of 71degrees and rh of 35% like @Afgan King is runnin his heat index is 76.66 which is a tad high but better to be higher than lower. Absolute sweet spot is 72 degrees with a 33% rh giving a heat index of 76.55

I know a lot like to use VPD but the charts are plant specific and I've never seen one based on cannabis? I figured out the heat index thing years ago by trying every temp/humidity combo and watching plant response

I'm at 71° canopy now lol

 

[Afgan King]

@Afgan King @RM3 @Olive Drab Green (you asked for some pics once - nicely too - here ya go)
So a, here we are then.....GG4 at exactly 8 weeks today.
Main had some Foxtailing as it's in an isolation tent with some higher temp/RH running sativa's

View attachment 3820872 View attachment 3820873

Next is some side branch shots - Nice!


View attachment 3820874 View attachment 3820875 View attachment 3820877

HERE is a shot of the lower "non" lollypopped area of the GG.......See kiddies, grow right and you don't get "airy popcorn buds" !!! and you don't need to remove leaves or what not to "get light to them" so they grow and fill out nice and dense!

View attachment 3820878

Here is the other resident strain of that isolation tent (They're in a breeding op. I don't want to take chances and also run a differing environment outside it).. Black Russian

View attachment 3820880

Now all you doubters have the rare look into one of my grows......so bite me !!!

T
That's my cut of gg4 right buddy? Looks gorgeous good job

 

[bryan oconner]

sexy looking plant . need to figure out a solution in my garden my woman and her friends make the plants vanish . that lovely plant would last them 3 days . lucky if i could even try it .

 

[Dr. Who]

T
That's my cut of gg4 right buddy? Looks gorgeous good job

Yuppers!

 

[TheChemist77]

i flower w/ the 12/12 photo period,,however im just starting my second run doing somthing a bit different to save on electric.. have a 4ftx6ft f&d table, 30 plants in rock wool placed in 6inch net pots covered w/ grow rocks..
above table i have 3 315 watt ceramic(cmh,lec,cdl,whatever u like to call them) i use the 3100k phillips agro bulbs in both veg and flower...
at the start of 12/12 i keep lamps 3ft above canopy but only have 2 of the lamps on for the 12/12 period for the first 20 days of flower.. bvy day 20 plants are through the stretch, and plant canopy is full..the 3 lamps are inline centered above table and the middle lamp is the one left off till day 20..
at day 21 all 3 lamps go on and i keep the lamps at 28inches above canopy.. i did the same thing on my last run, before that i ran all 3 lamps start to finish..w all 3 running start to finish i yielded 1.6 gow,, last run using only 2 till day 20 then all3 to finish i yielded 1.5 gpw and cut $150.00 off the monthly electric bill..
i also did a few runs using only 2 lamps (630 watts) start to finish above table and yielded 1.4 gpw..
as i said this is my second try using 2 then 3 lamps,, but it seems to be a good way of cutting my electric wile keeping yields... has anyone else did testing this way??? if so what was the outcome???