Killer info for setting up a CO2 equipped grow room!

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TheHoosierCropper

Member
Sorry late to the party here. Are there any positives or negatives to running the co2 line above or below the lights? I have a 20x25 room with 20 lamps up at 10 ft 4 inches off the ground. My plants will be sitting up on sliding benches about 20 inches off the floor. I understand it falls because its heavier than oxygen but do we have to put a fan or a redistribution apparatus on the ground if we feel we have enough air movement from the 20 16"wall fans I have? Or will those wall fans only help to push down the lighter gas and keep it down?
 
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TintEastwood

TintEastwood

Well-Known Member
TheHoosierCropper said:
Sorry late to the party here. Are there any positives or negatives to running the co2 line above or below the lights? I have a 20x25 room with 20 lamps up at 10 ft 4 inches off the ground. My plants will be sitting up on sliding benches about 20 inches off the floor. I understand it falls because its lighter than oxygen but do we have to put a fan or a redistribution apparatus on the ground if we feel we have enough air movement from the 20 16"wall fans I have? Or will those wall fans only help to push down the lighter gas and keep it down?
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I run it above everything.
Air circulation mandatory to prevent it from forming a blanket at floor level.

I've killed clones at floor level by forgetting to turn my fan on in veg. Co2 tox.
 
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TheHoosierCropper

Member
TintEastwood said:
I run it above everything.
Air circulation mandatory to prevent it from forming a blanket at floor level.

I've killed clones at floor level by forgetting to turn my fan on in veg. Co2 tox.
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My wall fans are up at about 7.5-8ft off the ground. I was thinking about running the line above the fans but below the lights. This way the fans move it and fill the room. Is there any great positives or negatives to this thinking? The room has more than adequate air movement with two 5 ton AC units and 2 dehumidfiers plus the 20 wall fans. I'm not planning on anything being on the ground except maybe a few moms in my veg room.

Maybe I should mention this a commercial grow where I have a large CO2 system installed by a local gas company. The only thing they do not do is run the perforated line throughout the room.
 
TintEastwood

TintEastwood

Well-Known Member
TheHoosierCropper said:
My wall fans are up at about 7.5-8ft off the ground. I was thinking about running the line above the fans but below the lights. This way the fans move it and fill the room. Is there any great positives or negatives to this thinking? The room has more than adequate air movement with two 5 ton AC units and 2 dehumidfiers plus the 20 wall fans. I'm not planning on anything being on the ground except maybe a few moms in my veg room.

Maybe I should mention this a commercial grow where I have a large CO2 system installed by a local gas company. The only thing they do not do is run the perforated line throughout the room.
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You should be fine. Sounds like a nice environment.
 
R

RedCairo

Member
OzyM8 said:
If you ever spend time in a smaller sealed room many would be surprised how quickly the level rises just from breathing when working in there. Like if I enter a 10x10x8 sealed room n levels are relatively low in veg like 700ppm, within 30mins they can be heading north of 1900.
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This is very interesting. I was bedridden for a few years, in a tiny room exactly the size you mention. I had this constant issue I complained about where "it feels like there is not enough oxygen in the air." I had a window a/c but it doesn't pull from outside. The door rarely opened. (Solitary confinement in a cube: unexpected effect of a heart condition...) The only air supply was from the climate control, and thank goodness for that. Not until I read your post did I realize that I must have been right: either there really was not enough oxygen, or the overabundance of CO2 was somehow reducing its effect.
 
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Souramnesia

Member
Souramnesia said:
https://vpdchart.com/#F,63,82.4,78.8,0 you can add a hygrometer to this site and all you do is add the lst. Works great. Very useful for new growers
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Go to settings and hit add sensor then follow the instructions. I use a govee hygrometer. It has a list of compatible hygrometers. If you click on a hygrometer and you don't own one it will take you to amazon so you can purchase it. This chart has adjustable settings that can be locked in.
 
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