24/0 vs. 18/6 debate is over!!!!

GrownAtHighAltitude said:
I'll have to get some pics from this year. I'm not great at taking photos with regularity unfortunately, but here are some from when I first built this room:

Day 44:
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I've got trellis and better defoliation going now. I just threw everything together for that run. Turned out great but it was awhile ago now.

Day 58 Bogglegum:

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A different, later run. Day 45 AKBB "Darien Gap" CGPRxTKNL5Haze:

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AKBB Hawaiian Cat Piss:

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I'll try to get some new ones soon.


This is all under 8/16 flower. I run the lights 9 to 5 because that's workin' hours. ;-)
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Thanks for the pics, it looks respectable right enough.
 
GrownAtHighAltitude said:
I'll have to get some pics from this year. I'm not great at taking photos with regularity unfortunately, but here are some from when I first built this room:

Day 44:
View attachment 5078220

View attachment 5078221

I've got trellis and better defoliation going now. I just threw everything together for that run. Turned out great but it was awhile ago now.

Day 58 Bogglegum:

View attachment 5078222

A different, later run. Day 45 AKBB "Darien Gap" CGPRxTKNL5Haze:

View attachment 5078223

AKBB Hawaiian Cat Piss:

View attachment 5078224


I'll try to get some new ones soon.


This is all under 8/16 flower. I run the lights 9 to 5 because that's workin' hours. ;-)
Click to expand...
I'm impressed!
 
GrownAtHighAltitude said:
There is more to plants than what has been written in Marijuana Grow books.

Bottom line
--------------------------------------------------
I use 28% less electricity in veg over 18/6
I use 33% less electricity in flower over 12/12

I suffer no yield loss, or lack of quality.
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Have you done back to back grows, same cuttings and same conditions, with 12/12 vs 8/16?

I'm curious enough to try it.
 
ttystikk said:
Have you done back to back grows, same cuttings and same conditions, with 12/12 vs 8/16?

I'm curious enough to try it.
Click to expand...

Not back to back, exactly, but I have 2 or 3 strains that I've been growing for longer than I've run this light schedule, and they all work.

One of those is the Tahoe OG cut I have and it does react very differently with the 12/1 veg schedule. The internode length shrinks to like 1/4inch, and it develops trichomes at the intersections. They never develop into buds, and no seeds are ever produced while under 12/1. Once I shift to 8/16 it goes right back to making delicious buds that I've known for 10+ years.

I first started messing with my light schedules after running 24 on for veg for a year or so. I was trying to figure out why my plants were turning yellow so quickly after transplanting. I switched to 18/6 and that helped tremendously.

After a few years of growing like that, I read Joe Pietri's book and website and came across this 12/1 8/16 method. Unfortunately, the guy kinda invites controversy with his opinions, so I don't really follow him otherwise. The light schedule DOES work and I bought an older copy of the Greenhouse Management textbook that he sourced his method/research from. It has to do with short-day plant cultivation or something, I can't remember all the details.

I just know it works and saves me a ton of $$ which is important in the mountains here. I have to run the expensive heat producing lights (CMH) to keep things warm.
 
One more thing, I've noticed some seeds I pop behave weird with 12/1 from the get-go. I'm not sure why, and I haven't controlled for popping under 18/6 to see if they were flukes either. It was only 1 or 2 strains that acted weird, and I only tried 1 or 2 beans from those, so statistically insignificant, really.

I have noticed some males like to show early under 12/1 and I cull those. I have other males that hold pollen until I flip them, and those seem to be more stable anyway. Again, strain dependent.

I switched over everything to this schedule, and if I had room to run an 18/6 control for veg I would, but I don't so. :-)
 
GrownAtHighAltitude said:
One more thing, I've noticed some seeds I pop behave weird with 12/1 from the get-go. I'm not sure why, and I haven't controlled for popping under 18/6 to see if they were flukes either. It was only 1 or 2 strains that acted weird, and I only tried 1 or 2 beans from those, so statistically insignificant, really.
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interesting, what did you notice, how did they behave weird?
 
GrownAtHighAltitude said:
Yeah, but it was only one strain with unknown lineage, so could have very well been an autoflower. I've cracked dozens of other strains since without issue. Take clones/keep moms, etc.

I transplanted from 12/1 inside to outdoors this last year with much success also.
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I'm impressed with your knowledge and experience on this. Do you do anything differently with light intensity?
 
ttystikk said:
I'm impressed with your knowledge and experience on this. Do you do anything differently with light intensity?
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Thanks! I was nervous to make the switch initially but I'm glad I did. I do wish I had a bit more space to put in 18/6 and 12/12 so I could do some side by side comparison runs. I haven't noticed any problems in the 2-3 years I've run this way though.

I don't do anything different except I run a battery backed digital timer instead of mechanical, so the light schedules don't get out of sync. I run non-dimmable CMH 315s in flower, sometimes with SolarCures. I use LED in veg almost exclusively.
 
GrownAtHighAltitude said:
Thanks! I was nervous to make the switch initially but I'm glad I did. I do wish I had a bit more space to put in 18/6 and 12/12 so I could do some side by side comparison runs. I haven't noticed any problems in the 2-3 years I've run this way though.

I don't do anything different except I run a battery backed digital timer instead of mechanical, so the light schedules don't get out of sync. I run non-dimmable CMH 315s in flower, sometimes with SolarCures. I use LED in veg almost exclusively.
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How much space do each of your 315W fixtures light? Do you remember the color temperature? Mine were singing like 4000K, which is kinda blue. From there I can work out how much light you have.

The buddy I mentioned also reported good results and said he kept his light intensity pretty high to help keep his DLI up. That could be a key factor.
 
ttystikk said:
How much space do each of your 315W fixtures light? Do you remember the color temperature? Mine were singing like 4000K, which is kinda blue. From there I can work out how much light you have.

The buddy I mentioned also reported good results and said he kept his light intensity pretty high to help keep his DLI up. That could be a key factor.
Click to expand...

I light a 3.5x10.5 space with 4 x 315's and 3 SolarCures in between. Each light is over 2.6x3.5 roughly. I only have three of the 315's lit right now, and no SolarCures going on this run.

I hang 18-22 inches over the canopy.

I just use the normal Phillips CMH bulbs. 3100k I believe.
 
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Pics I took the other day. I left the lights on, so the bud shots aren't great. My scrog game could be better too. ;-)

Peyote Cookies

I'm about to kill this one off to make room for others but I really dig the hamster cedar shaving musk aromas, so had to run it one more time.

Peyote_Cookies_1.jpg

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Hawaiian Cat Piss V3

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I didn't do the best with the cat piss this time as I had some bugs with my watering system I didn't work out properly the first time :-( I think they will be ok though. Smells are fantastic antiseptic and powerful strong/skunky odors.
 
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