Temps With 1500ppm Co2??

FLoJo

Well-Known Member
ya i have been letting my a/c settle at 85-88 and the plants seem to be thriving.. explosive growth, but without increased internode spacing
 

inval

Active Member
ya i have been letting my a/c settle at 85-88 and the plants seem to be thriving.. explosive growth, but without increased internode spacing
It's not the internode spacing but how tight and hard the final product is....I can't wait to hear how it works out.
 

livesoul

Well-Known Member
Great thread fellas. So to follow up, how did you grows come out with your temps?!? I've been concerned with my temps as they are running around 90-95 in the day now. I have not been running CO2 because I've been keeping my fans on constantly hoping to lower the temperature. But it seems like the temp is alright I suppose? Except for stinkbud just saying 85 was the spot it sounded like most you others had it around where i'm at while running CO2 and you've all done well?
 

pinner420

Well-Known Member
Great thread fellas. So to follow up, how did you grows come out with your temps?!? I've been concerned with my temps as they are running around 90-95 in the day now. I have not been running CO2 because I've been keeping my fans on constantly hoping to lower the temperature. But it seems like the temp is alright I suppose? Except for stinkbud just saying 85 was the spot it sounded like most you others had it around where i'm at while running CO2 and you've all done well?
Well I went the distance and got a 100000 btu chiller and I'm rolling with 78 nuts on with perfect results. If your rolling above 90 get some more cooling power.
 

inval

Active Member
Now that I've had some experience with C02, I'm starting to wonder about some of the information thrown around in this thread. Can anyone direct me to some real evidence, scientific or otherwise, that actually backs up the proposition that the higher temperature range (85-90) is actually more beneficial that say the low 80s? Is this just urban myth? Completely anecdotal?? I'm currently running in the low 80s with incredible results using the CHHC-1 and the Hydroinnovations C02 generator. I use ac and light ventilation to keep the temps down. I've mounted the generator outside the room to further reduce heat.

Some people are suggesting higher humidity levels are beneficial as well as higher temps with C02. In my experience when humidity levels climb above 80, it starts to interfere with the plants respiration. If the air is saturated with water vapor, then plants can't as effectively transpire. It becomes difficult to for atmospheric byproducts to move through the stomata if the air is over saturated with water. Plant exhaust then becomes stifled and growth slows...any thoughts? I'm constantly fighting to bring humidity down in my sealed up room. Currently, I'm working on a 3 hour cycle with 15 minutes of fresh air exhaust every 3 hours and ac and a dehumidifier working constantly. The plants look fantastic!

Definitely use the C02 during veg! It really accelerates growth rate and can significantly shortens veg time.
 

noone88

Active Member
Now that I've had some experience with C02, I'm starting to wonder about some of the information thrown around in this thread. Can anyone direct me to some real evidence, scientific or otherwise, that actually backs up the proposition that the higher temperature range (85-90) is actually more beneficial that say the low 80s? Is this just urban myth? Completely anecdotal?? I'm currently running in the low 80s with incredible results using the CHHC-1 and the Hydroinnovations C02 generator. I use ac and light ventilation to keep the temps down. I've mounted the generator outside the room to further reduce heat.

Some people are suggesting higher humidity levels are beneficial as well as higher temps with C02. In my experience when humidity levels climb above 80, it starts to interfere with the plants respiration. If the air is saturated with water vapor, then plants can't as effectively transpire. It becomes difficult to for atmospheric byproducts to move through the stomata if the air is over saturated with water. Plant exhaust then becomes stifled and growth slows...any thoughts? I'm constantly fighting to bring humidity down in my sealed up room. Currently, I'm working on a 3 hour cycle with 15 minutes of fresh air exhaust every 3 hours and ac and a dehumidifier working constantly. The plants look fantastic!

Definitely use the C02 during veg! It really accelerates growth rate and can significantly shortens veg time.
Temps with CO2 is mainly determined by genetics.

Your best bet is to get a laser thermometer. Odds are, if your room is 86-88, the temps of you canopy under the light will be 3 to 5 degrees higher.

Some strains can handle this, others cannot.
 

inval

Active Member
To determine temperature I put a thermometer probe right under a light on the plant's leaves...I check the room's ambient air temperature displayed on my CHHC-1.

I have trouble imagining how a heavy budded plant can do well in the 90-95 degree range.
 

luielugatz

Well-Known Member
i ust ran into a temp problem and i have been dealing with it for 3 days so far.....i have an aeroflo and that pump cooks the water sometimes.....my temp was running steady at 85 all day then dropping to 79 at night ......i did a lil research and started lowering my rez daily and about 3 days later my girls r comming back to life.....u can get alot of bacteria with the heat and man that shit sucks to clean....i say keep it low mine is running about 71-72 degrees right now.....

heat slows you down on a hot day,imagine what it must do to the plants....
 
that is phony baloney, imo


show me a plant thas grown in 70F-82F res temp conditions...


i can make a bet that plant didnt make it...and/or if it did....it had alot of problems and didnt yield much
I have DWC 5 gal buckets and are all at about 74F..yield is at about 4 oz per plant...with no co2 enrichment
 

CLOSETGROWTH

Well-Known Member
I have DWC 5 gal buckets and are all at about 74F..yield is at about 4 oz per plant...with no co2 enrichment
I also run dwc Buckets with a 1k light and c02.

My res temps max out around 75-77.

I got over 2 lbs last grow.

Hardest, most dense bud I ever grew :)

Works for me.
 
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