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Jammie
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November 17, 2019 2:27 pm  

It’s been a cold “summer” in my basement garden.  Currently I’m in week2 of flower. I’m using co2 at about 600-700ppm. I’m having problems getting my grow room temperature over 75. My question is whether I’m wasting my time and money on the  co2. I seem to remember hearing that co2 isn’t that effective with temps under 80. Is that true?


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Macky
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November 17, 2019 2:31 pm  

Unless you are running a close system CO2 isnt worth much TBH mate. 

The air in the grow room should be exchanged at least one every 3 mins ( 20 times and hour). This pulls all the CO² out of the grow room, before it is really used by the plants. 

Are you slowing down extraction to try and keep the air and CO² in for longer? That'll keep the heat in too?

"True guidance is like a torch in the forest, it doesn't show everything, but gives enough light for the next steps to be safe" -Swami Vivekananda


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Jammie
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November 17, 2019 3:10 pm  

It isn’t a completely sealed system but I have a co2 monitor and the level rarely drops below 580ppm unless I turn it off and open up the room. Ambient co2 in the house with 2 people and 2 animals is around475-500. Thanks for your reply Mackey. With all the commercial grows, I a little surprised at the lack of academic articles on best grow practices.


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Macky
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November 17, 2019 3:17 pm  
Posted by: @jammie

I a little surprised at the lack of academic articles on best grow practices.

it's been in the shadows for so long mate, only now  is real research being done on growing cannabis. Things will change, but for now, its more of an artform lol. Everyone has their own way of doing things, but no real peer review blind studies done to really know what works best. 

"True guidance is like a torch in the forest, it doesn't show everything, but gives enough light for the next steps to be safe" -Swami Vivekananda


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November 17, 2019 5:17 pm  

@jammie

This is what Jorge Cervantes' Cannabis Encyclopedia says about CO2... I've never used it myself so I can't say either way but, seems like you're on the low end of the effective temp spectrum. You probably are getting some benefit, but maybe not the maximum.  But again, I've never used it so, grain of salt and all that.

CO2 Enrichment Graph
CO2 Enrichment

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Jammie
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November 18, 2019 2:36 pm  

@templegrower

Thanks temple, I’d remembered 80 degrees from somewhere. At 75 degrees I’m close.  As the girls are bushing in early flowering I may add another 1k. That will increase temp 


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Macky
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November 18, 2019 2:37 pm  

@jammie

more light and higher temps man for sure mate! With the added Co2 they will love it 

"True guidance is like a torch in the forest, it doesn't show everything, but gives enough light for the next steps to be safe" -Swami Vivekananda


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Jammie
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November 18, 2019 5:05 pm  
717D39BB FB66 4A34 9999 2E78F62018EB

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Jammie
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November 18, 2019 5:12 pm  

4 gelato44 by seedjunky, 3 inzane in the membrane by ethos, 3 frosted cherry cookies by relentless. 10 days in flower.


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ScottishMac
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November 18, 2019 6:04 pm  

Looks great bro

"I know you don't smoke Weed, I know This; but I'm gonna get you High Today,'cause it's Friday.... An you ain't got shit to Do." - Smokey


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JenK
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November 18, 2019 6:18 pm  

I run my four burner cO2 unit at 1200 ppm right now week 6 of flower 

JKiss


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Macky
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November 18, 2019 6:28 pm  

Your grow room has everything though jen lol 😉 

"True guidance is like a torch in the forest, it doesn't show everything, but gives enough light for the next steps to be safe" -Swami Vivekananda


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Zombie Nation
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November 18, 2019 10:18 pm  
Posted by: @macky

Your grow room has everything though jen lol 😉 

Need to do a grow without all the additions to see if its worth all the extra $$$'s


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Jammie
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November 20, 2019 3:20 pm  

@zn

The only additives that I use are General hydro’s bioweed to feed the beneficial bacteria and protekt’ s silica as a ph up. I would advise everyone no never waste money on aptus’ s silica. I did a 50/50 grow off and the only difference was that protekt seemed to be a more stable ph up. My base nutes for the last couple years have been advanced nutrient’s connoisseur. I’m not impressed with their ph perfect tech. I’ll probably go back to ionic next year


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February 22, 2020