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12/1 lighting--Any truth or banana in the tail pipe?

blueberrydrumz

Active member
ICMag Donor
The 14/1 schedule will be done once I get my light next week. As things stand, my plants dont seem to be growing vertically anymore and they no longer spit out flowers. The only things that remains to observe are 1) do the plants start showing fast bud formation, and 2) do the plants have a low stretch ratio. Ill make a final report on them 3 weeks from now. (1 week to get my light in and installed, 1 week for veg, 1 week in flower) cheers
cool... looking forward to the info
 
K

krest

Recently started my next run of Sour D IBL (almost 2 weeks in) using the 11/13 light schedule. The Sour D has already increased in size by 50%. Going forward I will follow the lighting reduction every 2 weeks exactly as shown in the OP. I'll post results if I remember, maybe a few pics. If this schedule can get my SD to finish at 70 days, less than a 10% drop in yield, and tighter buds, I'll call it a success.

Update: Currently in week six and running at 10/14. Now... seeing that this is only my second SD run and my third run in this space, I have little historical comparison. The girls seem to be doing very well and look like the buds are bigger compared to the last run at this stage.... BUT it could just be that I'm dialing the room in better since the last run.

One thing is for sure... my electric bill is definitely lower. NICE
 

ogenko

Member
I have been normally using a 4h on / 4h off light cycle to save electricity which has worked wonderfully. The plants stay in veg, the temperature of the grow room stays lower and I haven't seen much difference in growth when compared with a regular light cycle.

yeah yeah
i started a cycle once with 6 on/6 off/6 on/6 off. it was doing very well (VERY) untill i ran into some disease issues. im gonna try again when i am sure i got everything dialed. seems alots simpler than the 12/1 thing

got pics? =)
 

GanjaPharma

Member
this last run, (under 12-1) i had 2 dutch treat in my room that both started showing tons more flower in veg than i am comfortable seeing. unlike their 42 roommates, (mix of strains) the 2 DT's were growing slowly and forming small rounded buttons of bud, as is normal for week 2 of flowering.

i changed the ON interval to 2 hours and now the DT's are growing normally again.

so:
earlier i posted that i have run tons of strains under 12-1 veg with no issues....well i found one strain that has issues.
so now i will ammend my earlier statement and say "i have run 30 different strains under 12-1, and have only had issues with one strain"
 

de145

Member
I've been doing 12/1 for many months now in my veg chamber and one strain throws out a lot of pistils but no actual buds growing. All the others have been fine with only very faint traces of pistils in some.

The big deal for me though is I'm growing non equatorial landrace sativas in a very small space and this method has made a *huge* difference in stretch when put into flowering.

Previously my system for dealing with these sativas to minimize stretch was feeding only flowering nutes in veg, growing in tiny one cup containers for their entire life, very intense light up close for vegging and adjusting feeding during flowering down to the point where they just barely start to show signs of deficiency.

Even with all that they were about half a foot too high in many cases but a second batch with the same treatment exactly but with 12/1 vegging lighting was a completely different story, most are about 6 inches shorter deep into flowering despite longer initial vegging.

I'm not sure if equatorial landrace sativas would show the same growth pattern but it works great for the mountainous ones and I think is a really important technique to add to the arsenal for any sativa grower.

(Also my very sativa leaning super silver haze is benefiting similarly)
 

mintz

Member
i have to say that starting seeds under this lighting has shown me the quickest preflowers ever,5 1/2 weeks instead of about 8:woohoo:
 

wildgrow

, The Ghost of
Veteran
Nice to see that there does seem to be some truth to the myth. Ok, so its been 4 weeks. The big girls only stretched about 20% max. The mini-moms went 50-100%, but I think the week under 400 w mh had a role to play in that. Some of my buds are getting to be about the size of the end of my thumb, others not so much. I think thats strain specific though. Unknown skunk pheno 1 is doing the best, as well as the m.o.b.

Sadly, I have no camera - yet.
 
K

krest

SD IBL finished in 68 days with nice tight flowers and limited foxtailing. When not using the reducing light schedule in flower, this pheno took about 77 days to finish and the flowers expressed much more of the foxtail trait which made is a pain to harvest. No numbers yet.
 

glockdoc

Active member
Nice to see that there does seem to be some truth to the myth. Ok, so its been 4 weeks. The big girls only stretched about 20% max. The mini-moms went 50-100%, but I think the week under 400 w mh had a role to play in that. Some of my buds are getting to be about the size of the end of my thumb, others not so much. I think thats strain specific though. Unknown skunk pheno 1 is doing the best, as well as the m.o.b.

Sadly, I have no camera - yet.

whats the m.o.b.?!?! im getting a clone of what i believe is m.o.d. but i could be wrong about the last letter. idk if its d or b lol.
 

ixnay007

"I can't remember the last time I had a blackout"
Veteran
I'm only on page 8, but I have a question.. if the plants are going to go outdoors, say in a month or so, what sort of reaction will they have to the light cycle outdoors..

Fwiw, it should be about 14.5 9.5 when they go outdoors :)
 
ixnay007 said:
I'm only on page 8, but I have a question.. if the plants are going to go outdoors, say in a month or so, what sort of reaction will they have to the light cycle outdoors..

Fwiw, it should be about 14.5 9.5 when they go outdoors
smile.gif

unfortunately they will probably go straight into flower, I find that unless I do 16/8 schedule I have issues with taking plants outdoors. From the plants perspective it is receiving 18.5(or only 5.5 hours of uninterrupted night) hours of light each day under the 12/1 cycle. you could try changing the schedule 12 on, 3 off, 1 on, 8 off, but that will be a trial and error method.

if you check out the outdoor forum, butte and dignan, have some good post on preventing early flower when transferring plants outdoors.
https://www.icmag.com/ic/showthread.php?t=56985

for me at my location I put plants out this past weekend, two of which were under 12/1, so I will have a better idea of their progress next week, but one looks like it has already begun to start flowering. note that this is only 2.5 hour difference in light schedule as I am receiving about 15 hours of light + sunrise and sunset (so + 1 hour or so) where as you would have 3-4 hour difference.

we'll see but, from the way they are growing the last few days they are probably going to reveg or go straight into flower, other plants that were under 16/8 are all growing fine.

good luck
 
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ixnay007

"I can't remember the last time I had a blackout"
Veteran
That's what I was thinking.. it might be worth upping the light schedule a couple hours before putting them out then.. I'll have a look at what the other thread has to say also.
 
K

krest

SD IBL finished in 68 days with nice tight flowers and limited foxtailing. When not using the reducing light schedule in flower, this pheno took about 77 days to finish and the flowers expressed much more of the foxtail trait which made is a pain to harvest. No numbers yet.

I'll probably never do the reducing light schedule in flower again. Almost a 25% reduction in final numbers. I guess I should have let them go another 10 days even thought they were very ripe... oh well.
 

wildgrow

, The Ghost of
Veteran
glockdoc- Ive never gotten a straight enough answer that Im willing to except on that m.o.b. The letters are supposed to stand for Mother Of... and this is the 1st break w/ absoluteness...Berry, Blueberry, Bud, all Berry, and all Bud. Someone on a different site wrote that someone told him it was also called NE blue hashplant. How Ive come to experience 'm.o.b.' is not as something hash-like at all. I find it to be slightly sour in the finish, starting w/ a strong wild berry start. The colas are pretty big and dense. The foliage is very dark and tough. Thats all I know about the m.o.b. that Im use to.

ixnay007- My plants arent going out, at least not the ones Im talking about here.

krest- Bummer about the yield decrease. I switched to a regular 12/12 when I flipped.

My girls are doing fine. I really wont know if the 14/1 I was running in veg will realize faster maturity until my plants are done. Ill be back. cheers
 

AcesBasis

New member
ok i see what you're talking about now. my clones do that when i take them after flowering starts. cool. i already know what happens after that point when i throw em into flower.
View Image
all bud, all bud!

Hey stihgnobevoli, interested in the flowering clones, I've had one in the bubbler for a while now 2 or so weeks, has rooted well but not wanting to revert to veg. Flowers have matured but it still won't kick over. Any suggestions
 

TLoft13

Member
I just used the 12/1 lighting schedule. Not the vegetative, only the flowering part for my first ever indoor grow(see my signature). Worked just fine, i got 0,5g/W. The transition to flowering was more what you would expect with a regular 18/6-12/12 schedule, not like these "fastswitch" buds demonstrated in this thread. But I'm happy.
 

Mister_D

Active member
Veteran
Just wanted to drop in and say i've been running 12/2 (12 on, 5 off, 2 on, 5 off) for a few months now. No preflowers on any of my strains, and veg speed is only a bit slower than lights on 24/7. Well worth the energy savings.
 

wildgrow

, The Ghost of
Veteran
So - does 12/1 make my plants mature faster? No. It would seem, at least in my case, that a 60 day strain is a 60 day strain. I do believe however that I will continue to use a 14/1 during veg. Ill just use a flouro for the single hour to save my bulb though.

Does 12/1 reduce stretch? It seems to one the mature plants. The mini-moms I made for taking clones stretched the most, but we're still talking 100% on some of those. Others were only about 50%.

I guess there is some truth to it, as long as its a banana split. cheers


Edit: Im not using a 14/1 as I previously stated. Im currently in the beer cup challenge and dont want to mess around w/ experimental lighting. However, my 3rd round, I will go w/ 14/1 and try to figure out how to set timers for a 20 hr day like I mentioned in a post a couple pages back.
 
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