Room Temp and CO2

[ReCway]

Ive read alot of on this subject and vpd ratios and just wanted to see what you farmers are running in your rooms. I personally run a hot room with 1500 ppm CO2. About 79-85 with 65% humidity and get superb results. Once i get flowers around week 3-4 i bring down temps to no higher then 82. I have noticed really good growth like this.


What do you guys run?

 

[Papa]

i try to get 70%+ rh at the beginning (difficult with the a/c) and slowly reduce it throughout flower to about 40%. i also vary the CO2, peaking at 1,500 around week 3 and slowly reducing it to 400 in week 8. 'don't know if it's any better or worse, it's just what i've arrived at.

 

[ReCway]

i try to get 70%+ rh at the beginning (difficult with the a/c) and slowly reduce it throughout flower to about 40%. i also vary the CO2, peaking at 1,500 around week 3 and slowly reducing it to 400 in week 8. 'don't know if it's any better or worse, it's just what i've arrived at.

What about temps?

 

[Papa]

80-82 and then drop towards the end. 10° lower during lights off.

 

[GKR]

In hydro for veg I like to run between 90-95 with humidity up around 80% and keep the co2 around 600 at first and then bring it up to 1250ppm or so once the plants have developed and become accustomed to the system. In flower I keep co2 at 1000ppm during lights on and take my temps down to around 75-80 and keep rh around 55% when they swell I cut co2 down.
Soil is the same except in veg I keep my veg room temps a lot cooler around 79-83 to avoid root problems in soil. For flower I have a perpetual sog and keep my co2 burning around 600-900ppm at all times swings on a timer but I still get great finished nugs with this set-up.

 

[ReCway]

Cool so 79-82 seems to be sweet spot with co2

 

[slumdog80]

1150 ppm on c02, room temps 85 and 65 - 75 rh in veg and
first 3 weeks flower, then week 4-7 80 degrees 55-60 rh
week 8-9 75 degrees

 

[Reebs]

i've always heard to just NOT use C02 in the last 2 wks or so, i tried it on this tray i'm about to take down on monday, seems to have bulked out a lil more than usual for me, i just let the tank run out a few days ago and left it.

 

[ReCway]

i've always heard to just NOT use C02 in the last 2 wks or so, i tried it on this tray i'm about to take down on monday, seems to have bulked out a lil more than usual for me, i just let the tank run out a few days ago and left it.

I have read this also. I have always done this. Last 2 weeks co2 is about 500PPM

 

[slumdog80]

I cut it off just for the last week. I have not tried anything else. I may give the 500ppm for
the last two a try.