CO2 replenishment

bravedave

bravedave

Well-Known Member
I am currently exchanging air 50% of the time in my 7x7x8 room (6 plants utilizing 6x3x4 of that room). My temps are fine without exchanging that much. Intake is cold but I want the CO2. How many room air replacements a day would one need to do to keep CO2 levels acceptable????
 
bravedave

bravedave

Well-Known Member
Yeah, no Co2 tank, just cold, fresh air pulled passively through 6" intake on floor by 6" Hurricane on ceiling.

Although not "sealed" it is tight. When the exhaust is not running there is pretty much no air transfer. Got the impression by reading something here that my room probably is good for 8 hours. Sound reasonable?


Not spending the $ now for a decent meter when I am fine as is but just looking to improve.
 
Ammastor

Ammastor

Active Member
If you are pulling air from outside you really do not need to. CO2 levels are higher in a living area then other areas unless you live in an area that has certain factories or other things that product large quantities of CO2.

Your level with in a house that is lived in will be higher then the outside air. More so at night.

outside general ppm is usually between 250-350 ppm
indoor living are is usually between 350 - 1000 ppm depending on how many people live in the house.

Anything under 5000 ppm is doable inside. As over 5000 ppm can start to lead to oxygen deprivation.

Sorry extra information that was not really needed.


I would just vent and circulate within the house at-least twice a day if your room is a sealed room anyways. If it has aor flow from the house. I would do with Vostok and say none.
 
bravedave

bravedave

Well-Known Member
Ammastor said:
If you are pulling air from outside you really do not need to. CO2 levels are higher in a living area then other areas unless you live in an area that has certain factories or other things that product large quantities of CO2.

Your level with in a house that is lived in will be higher then the outside air. More so at night.

outside general ppm is usually between 250-350 ppm
indoor living are is usually between 350 - 1000 ppm depending on how many people live in the house.

Anything under 5000 ppm is doable inside. As over 5000 ppm can start to lead to oxygen deprivation.

Sorry extra information that was not really needed.


I would just vent and circulate within the house at-least twice a day if your room is a sealed room anyways. If it has aor flow from the house. I would do with Vostok and say none.
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Room is in an unheated pole barn and is getting its intake air from within it... Probably ppms like outside. Gonna cut to 4 times a day. Thanks.
 
Ammastor

Ammastor

Active Member
Yeah thought it was a house you were in. So yeah more then likely it 250-350 ppm.could be higher or lower depending on where you are located though. Find a cheap test kit. Find out for sure.
 
rob333

rob333

Well-Known Member
vostok said:
If Dave is feeding his plant C02, then having an air inlet is not required?
otherwize hes leaking air into the outside,
will cost a fortune to run
,...lol​
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always right vos lol when we run co2 we do it in burst of about 10 mins runs minus when the lights are off but yeah for the whole 12 hours co2 in 10 min burst with a fresh air intake inbetween
 
Cold$moke

Cold$moke

Well-Known Member
The old standard was I believe 1 exchange every 3 to 5 min

if running co2 im in the boat that also likes a shot of real fresh air as well and even though my room is sealed I always inject fresh air to my res that way the roots have fresh o2
just my 2
 
bravedave

bravedave

Well-Known Member
Cold$moke said:
The old standard was I believe 1 exchange every 3 to 5 min

if running co2 im in the boat that also likes a shot of real fresh air as well and even though my room is sealed I always inject fresh air to my res that way the roots have fresh o2
just my 2
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I assume you meant 3-5 hours??
 
bravedave

bravedave

Well-Known Member
rob333 said:
always right vos lol when we run co2 we do it in burst of about 10 mins runs minus when the lights are off but yeah for the whole 12 hours co2 in 10 min burst with a fresh air intake inbetween
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10 minute bursts with how much time inbetween? And the bursts/co2 replenishment is not done when the lights are offf???
 
superlemonman

superlemonman

Member
hello sorry to bother people I need help bad im a novice I got a haze strain and its in 3 weeks of flowering I snapped the top off clean off im so sad iv worked hard on my garden its about 2 inches off the top will it be ok ? really need help from experienced growers
 
bravedave

bravedave

Well-Known Member
superlemonman said:
hello sorry to bother people I need help bad im a novice I got a haze strain and its in 3 weeks of flowering I snapped the top off clean off im so sad iv worked hard on my garden its about 2 inches off the top will it be ok ? really need help from experienced growers
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WTF are you writing in this thread for??? Start your own thread with a picture MJ is pretty resiiant
 
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