C02 in winter basement?

H

HoundsNTrout

Member
Couple things. I've got some plants in basement which maintains about 40F all Winter. Plants are 'inside' an enclosure with no top ( silver foam board like insulation under siding stuff ) . ANyway, with the lights running it maintains 76F during the ON cycle and with the addition of a small heater down on the floor during OFF cycle maintains 50-60F. Question, do plants get enough C02 in a basement with just us 2 humans and 7 house dogs? I mean C02 sinks but there is no growth outside of course here in the North Country. And secondly, is that 50-60F OK? Or should I adjust the heater a bit higher? My main idea is keep this F3s to more of what we experience here in the North East. Same strain saw mid 30s this November OUTSIDE and never died. Actually did great. But anyway, I don't want to spend a ton in extra C02 device if I don't need to, and the plants look GREAT with no extra. BUT just wondering . thanks all
 
Gas appliances generally raise co2. If you have a mechanical room like mine , in winter ambient temperature and co2 is greater than other rooms. I like running my passive intake near furnace and water heater. For temps check vpd chart and shoot for the accompanying humidity level to be within range.
 
If your plants look happy then don't need to change much. Running any kid of CO2 supplementation is a waste of time and money unless it's inside a sealed grow room. Just run fans for circulating and exhausting the grow space and you'll be fine. With 2 adults and 7 dogs you'll have plenty of CO2 for your plants. Oh and just so you know for future CO2 does not sink or rain down or concentrate closer to the floor, these ideas are just bad bro science.
 
Kola_Kreator said:
If your plants look happy then don't need to change much. Running any kid of CO2 supplementation is a waste of time and money unless it's inside a sealed grow room. Just run fans for circulating and exhausting the grow space and you'll be fine. With 2 adults and 7 dogs you'll have plenty of CO2 for your plants. Oh and just so you know for future CO2 does not sink or rain down or concentrate closer to the floor, these ideas are just bad bro science.
Click to expand...
As a bro-science representative our official stance is still that (in normal temperatures)co2 is heavier than air and thus sinks.
 
Fallguy111 said:
As a bro-science representative our official stance is still that (in normal temperatures)co2 is heavier than air and thus sinks.
Click to expand...
It's false mate. Air particles are constantly moving and bouncing off each other. C02 and oxygen do not stratify into layers they mix and stay mixed. If CO2 formed layers you wouldn't be able to breathe when you went down to the basement because all the CO2 you breathe out would have collected down there and gotten to poisonous concentrations.
 
Kola_Kreator said:
It's false mate. Air particles are constantly moving and bouncing off each other. C02 and oxygen do not stratify into layers they mix and stay mixed. If CO2 formed layers you wouldn't be able to breathe when you went down to the basement because all the CO2 you breathe out would have collected down there and gotten to poisonous concentrations.
Click to expand...
Thanks for the info. Unlike “regular “ scientists that will accept money to change their stance us bro-scientists are a pretty stubborn lot, so we’ll stay with co2 is ~1.5x heavier than air and agree to disagree.
 
Fallguy111 said:
Thanks for the info. Unlike “regular “ scientists that will accept money to change their stance us bro-scientists are a pretty stubborn lot, so we’ll stay with co2 is ~1.5x heavier than air and agree to disagree.
Click to expand...
That's not how gasses work but your welcome to believe in the tooth fairy if it makes you happy.

I run a sealed grow room with supplemented CO2 and levels read exactly the same at the roof as they do at the floor.
 
Kola_Kreator said:
That's not how gasses work but your welcome to believe in the tooth fairy if it makes you happy.

I run a sealed grow room with supplemented CO2 and levels read exactly the same at the roof as they do at the floor.
Click to expand...
You seem like a smart person. Do you have any advice on herding gingers? ‍‍‍
 
CO2 is slightly heavier than air.

Any tent should have ample airflow to ensure homogeneous CO2 levels throughout the tent.

I have co2 sensors (scd41 and scd30) and the data doesn't lie: there's no difference in co2 levels regardless of sensor placement.
 
Billy the Mountain said:
CO2 is slightly heavier than air.

Any tent should have ample airflow to ensure homogeneous CO2 levels throughout the tent.

I have co2 sensors (scd41 and scd30) and the data doesn't lie: there's no difference in co2 levels regardless of sensor placement.
Click to expand...
When mixed by outside side forces.
 
Lou66 said:
Your 20 $ are all top of the line thus the conclusions you draw are valid and scientific.

Co2 accumulates in pits. Ask an engineer.
Click to expand...
In an enclosure without any air movement CO2 will eventually settle on the bottom. In a tent with air movement, that does not occur.

Are you casting aspersions on the accuracy of the Sensiron CO2 sensors?

CO2 doesn't settle in a tent. Ask a grower with the means to measure it rather than speculate.
 
HoundsNTrout said:
Couple things. I've got some plants in basement which maintains about 40F all Winter. Plants are 'inside' an enclosure with no top ( silver foam board like insulation under siding stuff ) . ANyway, with the lights running it maintains 76F during the ON cycle and with the addition of a small heater down on the floor during OFF cycle maintains 50-60F. Question, do plants get enough C02 in a basement with just us 2 humans and 7 house dogs? I mean C02 sinks but there is no growth outside of course here in the North Country. And secondly, is that 50-60F OK? Or should I adjust the heater a bit higher? My main idea is keep this F3s to more of what we experience here in the North East. Same strain saw mid 30s this November OUTSIDE and never died. Actually did great. But anyway, I don't want to spend a ton in extra C02 device if I don't need to, and the plants look GREAT with no extra. BUT just wondering . thanks all
Click to expand...
76F is good with HID, low to mid 80's with LED. HID raises leaf temp above air temp with infrared, LED doesn't. Lights off temps are rather low, might be good to get a seedling/heat mat under the pots to keep their feet warm.

I think your co2 level will be fine, unless it's a huge grow of heavy breathers. Il'l take my meter to the basement again and report back.
 
Last edited:
Ok, here are my co2 levels.
567 in the tent, second floor.
585 on main floor.
546 in the basement. It rose to 594 as the forced air furnace ran.
 
1212ham said:
Ok, here are my co2 levels.
567 in the tent, second floor.
585 on main floor.
546 in the basement. It rose to 594 as the forced air furnace ran.
Click to expand...

Makes sense that the home furnace system would keep the environment stirred up and reasonably balanced.
 
You must log in or register to reply here.
Back
Top