Co2 All For Nothing?

Thereallenny · Nov 20, 2015

20 yrs ago the guy who taught me to grow ( may he rest in peace) had me set my temps at 72 when lights are on and 68 when off and he had me run a sealed room with co2. The thing is I never looked into it and after all these years I found out to utilize c02 your temps need to be at 80 when lights are on or hotter. So anyone know if what I'm reading is correct? Makes me sick to think after buying 10,000 tanks of co2 it was for nothing. I would love to hear your opinion on this. Thanks

sixstring · Nov 20, 2015

well if you ran sealed you needed the co2,if that makes ya feel better lol.it could have been better at higher temps yes,but being sealed you needed it.at least you didnt have to deal with smell.

mittenmedgrow · Nov 20, 2015

I haven't ran co2 at low Temps like that but I can tell you the fastest growth rates I have been able to achieve have been at 85f 75% humidity with lots of light. Running at lower Temps might not be getting full benefits of co2 but I can't tell you that from experience.

CelticEBE · Nov 20, 2015

It's all about the VPD (Vapor Pressure Deficit).

Also, its better to get a laser thermometer and take leaf temps. Your room can be 80, but depending on style of grow, your leaf temps can wind up being 85 or higher. Also take note that some strains respond better to lower levels of co2 than others.

I stopped running co2, and honestly I can see an increase in my quality with the fresh air exchange.

hawkman · Nov 20, 2015

needs to be at least 80 degrees for co2 to work

sixstring · Nov 20, 2015

CelticEBE said:
I stopped running co2, and honestly I can see an increase in my quality with the fresh air exchange.

View attachment 550753

i been tryin to tell people that for years,its a matter of quantity or quality.my bud is way better without co2

hawkman said:
needs to be at least 80 degrees for co2 to work

well that would depend on what you mean by "work" lol.if you seal your room and dont use co2 your plants wont "work" without co2.but if your talking about excellerated growth rates,yes it needs to be warmer than 78f and the co2 is not fully utilized until around 84f.but if all other factors are not on point like celtic mentioned vpd,or nutes,it would be a waste of time imo

hawkman · Nov 20, 2015

ever use TNB Enhancer ? (CO2 product) The "bag" products are not worth it and really don't work

mittenmedgrow · Nov 20, 2015

I agree with the guys on the quality issue with co2 I run about 1000ppm in veg and up to week three or four in flowering then cut it back to 400 to 600 ppm. I am not an expert with co2 but it works for me. If I wasnt trying to seal up and keep odor in I wouldn't f with it at all. My last 24k warehouse I didn't have neighbors ,smell was not a concern so I ran her ventilated with no co2.

hawkman · Nov 20, 2015

mittenmedgrow said:
I agree with the guys on the quality issue with co2 I run about 1000ppm in veg and up to week three or four in flowering then cut it back to 400 to 600 ppm. I am not an expert with co2 but it works for me. If I wasnt trying to seal up and keep odor in I wouldn't f with it at all. My last 24k warehouse I didn't have neighbors ,smell was not a concern so I ran her ventilated with no co2.

- you do see results with CO2 use ? the product by TBN says 1500ppm in a grow space - b ut is probably a 4 x4 grow space or smaller, Thoughts on ?

CelticEBE · Nov 20, 2015

hawkman said:
needs to be at least 80 degrees for co2 to work

As I stated earlier.......this is kind of inaccurate. Your room can be 80 degrees, and if your leaf temps and your humidity isn't in range, you are not doing much to boost anything.

Case in point: I was running a Vertical tree room a few years back, had LOTS of airflow going on and 5 tons of cooling in the room. I had to run my ambient temps at 79 because my leaf temps were right at 84.

So....like I said.....a laser thermometer is needed to accurately dial a room in.

hawkman · Nov 21, 2015

CelticEBE said:
As I stated earlier.......this is kind of inaccurate. Your room can be 80 degrees, and if your leaf temps and your humidity isn't in range, you are not doing much to boost anything.

Case in point: I was running a Vertical tree room a few years back, had LOTS of airflow going on and 5 tons of cooling in the room. I had to run my ambient temps at 79 because my leaf temps were right at 84.

So....like I said.....a laser thermometer is needed to accurately dial a room in.

Thanks for information --PEACE !!!!

NFT · Nov 21, 2015

CelticEBE said:
It's all about the VPD (Vapor Pressure Deficit).

Also, its better to get a laser thermometer and take leaf temps. Your room can be 80, but depending on style of grow, your leaf temps can wind up being 85 or higher. Also take note that some strains respond better to lower levels of co2 than others.

I stopped running co2, and honestly I can see an increase in my quality with the fresh air exchange.

View attachment 550753

That is interesting, ill have to buy one of these things one day
my leaves always feel cold to the touch if they did not i would be worried as this would be a sign the leaves are shutting down to retain the water inside them as the plant is unable to drink quick enough to cool themselves

i tend to run my room at 80 to 85f which makes the plants drink lots of water and grow faster and bigger
i find if the plant can keep itself cool by drinking from an unrestricted water supply (hydro) along with enough air movement to keep humidity around the foliage low so the plants can transpire into the air effectively works well
for speedy growth

peace

Co2 All For Nothing?

Co2 All For Nothing?

Thereallenny

sixstring

mittenmedgrow

CelticEBE

hawkman

sixstring

hawkman

mittenmedgrow

hawkman

CelticEBE

hawkman

NFT

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