Congrats on a super harvest, light makes a huge difference
lazyfish
Well-Known Member
Bumper harvest! How many plants did you pull all that off of?
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- #1,623
Thanks, Brother! It sure does - especially with the LED's I used to run! They were good in their "hey day" but the technology has come a long way since then!
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- #1,624
Thanks, Bro! I've been running five plants in a 4'x4'. Four are in #10's and, in the middle, I run a SIP that's about the equivalent of a #4 or #5.
I'm guessing, although it's still early, I'm gonna blow those numbers away on this round if I can even keep the girls contained in the tent!
I think, in my eagerness to make better use of the height this round, I MAY have waited a little too long to flip. Today will be their first real day of 12/12, although, I did cut the lights out for the first time last night (I veg under 24/0, so they got 12 hours of dark - it's just that it was preceded by hundreds of hours of light!
). The horizontal space is PACKED! I'm pretty sure, if I lose about 10 pounds, or so, I could lay across the canopy without even bending a branch!
I thought I had about 30" to raise the lights, but it really looks more like 24" and even less on the center light which is right under the fat carbon scrubber.
I pretty sure I can deal with a 2' stretch OK, if it gets much more than that, we're gonna' have some issues!
I'll post some pics later!
Hey Krip! So why do you veg 24/0? It's obviously working for you, just curious because I thought plants needed a little rest and that's also cheaper on the electric bill. I've been running 16/8 but considering going back to 18/6.
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- #1,626
Hey Krip! So why do you veg 24/0? It's obviously working for you, just curious because I thought plants needed a little rest and that's also cheaper on the electric bill. I've been running 16/8 but considering going back to 18/6.
This has been a HIGHLY debated topic and I don't want to claim to be the arbiter so I will simply say that I personally see faster growth rates under 24/0 (and, I've ran just about every light schedule, including GLR!) and the old Marijuana Grow Bible says that, unless you need the energy savings, you'll get better yields with 24/0.
I've also seen no science suggesting the plants need a dark period!
Thanks Brother! Mine seem to take forever to veg so maybe I'll try 24/0 next time!?!???
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- #1,628
If you can deal with the additional cost & heat, it's nice not having to worry about timers (you probably understand this better than most!
) and you should see bushier plants.
Thanks for the info! I'll give it a try next round which will not be until I have a new house. I'm having some issues, just waiting on the building permit but also the bank is not covering as much of my current mortgage than they originally said they would so I have to come up with that money, ugh!
I will say that I'm pretty sure most growers around these parts are doing less than 24/0 in veg. I want to start growing some monsters that will have me rethinking tent vs grow spaces.
I will say that I'm pretty sure most growers around these parts are doing less than 24/0 in veg. I want to start growing some monsters that will have me rethinking tent vs grow spaces.
I have seen it mentioned by others that it isn't the amount of time the plant receives light for so much as the amount of light a plant receives in a day. I believe it was @Graytail that was sharing info about the max amount of light cannabis can use in a day and how it is beneficial to give the plant dark after it reaches that point so that it does not get stressed out.
Someone else also posted up studies saying that cannabis does need to sleep in order to rest and grow roots. The study showed that 16/8 was best because it allowed for more rest and root growth to happen.
Someone else also posted up studies saying that cannabis does need to sleep in order to rest and grow roots. The study showed that 16/8 was best because it allowed for more rest and root growth to happen.
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- #1,631
Like I said...It's been HIGHLY debated and I'm not the one to decide who's right - only answering why I personally use 24/0 and I have never had a plant stress from it, but I'm using LED's so, perhaps I never reach that "saturation point" that Brother Graytail was referencing?
I feel ya bud I was just offering up the flip side of the coin. I too run 24/0 and I know I am no where close to giving them too much light. i do not think you wuld hit too much light with lower power LEDs and def not florescents which is what I run in veg. I think you need HIDs, cobs or boards or something like a Perfect sun or a spider rx like Van has.Like I said...It's been HIGHLY debated and I'm not the one to decide who's right - only answering why I personally use 24/0 and I have never had a plant stress from it, but I'm using LED's so, perhaps I never reach that "saturation point" that Brother Graytail was referencing?
lazyfish
Well-Known Member
I read a book lately I think it was called the Marijuana Handbook. It was filled with a lot of recent information and included data from a study that focused on growth during veg. They said there was a linear relationship between the #of light hours and plant growth. 24/0 and 18/6 gave the same about of growth per hour with no other drawbacks. So it just depends on what YOU as a grower want to do. I use 18/6 because it lets me keep temperature manageable and I really don't mind waiting a few more days to get a plant big enough to flower. Plus I keep a small pile of mothers and I don't want them to get too big.
Cheers,
Cheers,
I run 20/4, with no particularly good reason for it. I tend to think that 24/0 is not necessarily good, but I don't see any obvious differences in grows.
I've been getting issues with mature plants pre-blooming in veg though, so I'm hesitant to reduce light hours much more.
But I have other issues in the veg room - primarily humidity control, so the plants are always a bit stressed in the winter.
I've been getting issues with mature plants pre-blooming in veg though, so I'm hesitant to reduce light hours much more.
But I have other issues in the veg room - primarily humidity control, so the plants are always a bit stressed in the winter.
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- #1,635
This is my understanding, also. More light hours in the day equals more growth in the day. The way I slow down my moms is that they only get nutes a couple/few times per month. The rest of the time is either plain H2O or plain H2O mixed with some liquid kelp.
I had problems with my mature moms going into bloom when using GLR. I haven't personally experienced it with 18/6, but just the same, I do feel "safer" with the 24/0. If I was running any autos in the veg tent, I'd be tempted to drop it to 20/4.
I been more or less running my veg tent 24/7 myself...I may have lights take a break,, depending on temps... But with the door open tho so still 24'7.. But I do know in a PERFECT world,, plants need that dark for least 4 hours to really grow.. But being the lazy man I am,,,
One other thing I think about 24/7 is I 'Think' they kick into flower faster when you start them on 12/12 shift?????????
It seems to me that it depends on maturity. At 20/4, mine are straining to bloom after a couple months. But if you flip 'em earlier, maybe they switch faster from 24/0 ...
I remember seeing some discussion but I don't remember the final judgement.- Thread starter
- #1,639
DAY #2 OF 12/12 - WELCOME TO THE JUNGLE! 
Yesterday was the first day of 12/12 and, as you'll see, all plants are healthy. But, they're big, the tent is packed, and the stretch hasn't even started yet!
These plants are starting flower at about the same heights the last round was at harvest. The only real difference is, the last round had the White Widow & Blackwater which were both relatively young plants compared to the other three since they replaced the Bad Azz Kush I culled at the last minute. This round, all are healthy & mature.
As long as I don't outgrow the vertical space this round, which is something I'm a little concerned about, it should be a pretty awesome harvest!
Here's some pics from different sides of the tent - don't ask me to tell you which plant is which!
Happy Harvests!
K
Yesterday was the first day of 12/12 and, as you'll see, all plants are healthy. But, they're big, the tent is packed, and the stretch hasn't even started yet!
These plants are starting flower at about the same heights the last round was at harvest. The only real difference is, the last round had the White Widow & Blackwater which were both relatively young plants compared to the other three since they replaced the Bad Azz Kush I culled at the last minute. This round, all are healthy & mature.
As long as I don't outgrow the vertical space this round, which is something I'm a little concerned about, it should be a pretty awesome harvest!
Here's some pics from different sides of the tent - don't ask me to tell you which plant is which!
Happy Harvests!
K
Looking very nice bud! Its going to be a sea of colas in here soon!