do c02 levels need to come down during night hours (while flowering)

J

Jason Cox

New Member
I'm running a setup in a garage where i have a large tent for vegging
and use the rest of the garage's open space with no tents for flowering,
with a c02 propane generator.

i'm wondering if i should have the c02 sensor be located inside the the
tent (so that c02 levels remain constant 24 hours a day) or if that could
be harmful to my flowering plants (to have 1000ppm c02 during their
night schedule)

thanks
jason
 
since1991

since1991

Well-Known Member
EvlMunkee said:
you don't need CO2 for vegging. shut it off at night
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Huh? No co2 for vegging huh? Are you sure about that buddy? No its not needed but its not in flowering either for that matter (unless running a super sealed room). Have you ever properly supplemented carbon dioxide on plants under a vegetation light schedule???????? I have and it makes a HUGE DIFFERENCE IN VEG
 
Dr. Who

Dr. Who

Well-Known Member
since1991 said:
Huh? No co2 for vegging huh? Are you sure about that buddy? No its not needed but its not in flowering either for that matter (unless running a super sealed room). Have you ever properly supplemented carbon dioxide on plants under a vegetation light schedule???????? I have and it makes a HUGE DIFFERENCE IN VEG
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I've found that the cost to return of Co2 in vegging is not worth it! For sure so if you use bottled Co2..
I don't even turn on my generator till week 3 or after the stretch.....Now I'm getting what I pay for!
 
since1991

since1991

Well-Known Member
Ive found that running co2 in veg greatly reduces veg time and acts as if the plant is on hyper steroids. Many many flowering nodes. Plants have shoots everywhere and are extremely compact, healthy and bushy. This translates into much higher yields in the flower room. I know some growers that use carbon dioxide ONLY in veg.
 
ttystikk

ttystikk

Well-Known Member
since1991 said:
CO2 prolongs ripening in the later stages of flowering. Especially if its its high in ppm during lights off. It interacts with ethylene. Ramp your meter/monitor down before lights off. And shut it off completely the last few weeks or so (totally strain dependant)
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Only CO² burners will accumulate ethylene, tanks don't. It didn't come from the CO² itself, it's a byproduct of incomplete combustion.
 
ttystikk

ttystikk

Well-Known Member
since1991 said:
Huh? No co2 for vegging huh? Are you sure about that buddy? No its not needed but its not in flowering either for that matter (unless running a super sealed room). Have you ever properly supplemented carbon dioxide on plants under a vegetation light schedule???????? I have and it makes a HUGE DIFFERENCE IN VEG
Click to expand...
since1991 said:
Ive found that running co2 in veg greatly reduces veg time and acts as if the plant is on hyper steroids. Many many flowering nodes. Plants have shoots everywhere and are extremely compact, healthy and bushy. This translates into much higher yields in the flower room. I know some growers that use carbon dioxide ONLY in veg.
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You're giving me ideas...
 
O

Openears

Member
From everything I have researched I agree with 1991 co2 is most important during veg daylight hours with high heat 85 to 95 degrees. Without the heat the 1100-1500 ppm of co2 is useless from what I've researched. Is that true 1991?
 
a mongo frog

a mongo frog

Well-Known Member
Openears said:
From everything I have researched I agree with 1991 co2 is most important during veg daylight hours with high heat 85 to 95 degrees. Without the heat the 1100-1500 ppm of co2 is useless from what I've researched. Is that true 1991?
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Research and doing it are 2 different things. Try it in your garden and see if it works for you. Ive been doing 80-81 degrees and 900ppm. Oh and in flower only. But thats just what I've tried and done. And what do you think about vpd?
 
O

Openears

Member
a mongo frog said:
Research and doing it are 2 different things. Try it in your garden and see if it works for you. Ive been doing 80-81 degrees and 900ppm. Oh and in flower only. But thats just what I've tried and done. And what do you think about vpd?
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I honestly have no experience with any sort of growwing I just am about finished creating a true sealed room and am going to ruin co2 via tanks. I am going to run 1500ppm all through veg and taper down through flower with my end result for the last two weeks of 350ppm. What is vpd? Also how has your co2 grow been going any tricks you've learned. It seems that like you said, reading and research means little until applied in an actual grow.
 
a mongo frog

a mongo frog

Well-Known Member
Openears said:
I honestly have no experience with any sort of growwing I just am about finished creating a true sealed room and am going to ruin co2 via tanks. I am going to run 1500ppm all through veg and taper down through flower with my end result for the last two weeks of 350ppm. What is vpd? Also how has your co2 grow been going any tricks you've learned. It seems that like you said, reading and research means little until applied in an actual grow.
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Thats awesome bro!!! Congrats on the sealed room. No tricks really, just make sure you can control your rh during the lights off period. I too do the last to weeks at 350, however I'm at 900ppm from week one till then. As far as how its been going, co2 enrichment is a whole other world. Explosive growth, bigger yields, everything you've heard is true. It did take me a few runs and many sleepless nights to dial it in though.
 
O

Openears

Member
a mongo frog said:
Thats awesome bro!!! Congrats on the sealed room. No tricks really, just make sure you can control your rh during the lights off period. I too do the last to weeks at 350, however I'm at 900ppm from week one till then. As far as how its been going, co2 enrichment is a whole other world. Explosive growth, bigger yields, everything you've heard is true. It did take me a few runs and many sleepless nights to dial it in though.
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Thanks a lot man, it's good to hear it's working from someone that's applying it. Are you using an environment controller? If so which one is working for you?
 
a mongo frog

a mongo frog

Well-Known Member
Openears said:
Thanks a lot man, it's good to hear it's working from someone that's applying it. Are you using an environment controller? If so which one is working for you?
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Iam using a controller chhc4. But as time went on and i got my room under control via A/C dehumidifiers, i realized all i needed was a monitor with a sniffer. Could of saved my 400 bucks or so. Basically i never use any of the functions on the environment controller other then the co2 function.
 
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