How much will not having a proper ventilation/exhaust effect growth speed

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VancouverBCBud

New Member
So my plants are in my room under a 400 watt MH, and relatively far from the two open windows of the room. All I have is 2 oscillation fans so i'm just wondering if these plants will end up with a lack of co2 and how much that could effect the growth. Thank you!
 
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VancouverBCBud

New Member
Temps are usually between 80-85 and I don't have a humidity gauge yet it's being shipped. I am using one fan to blow air up and out of the cool tube and the other to blow around the air/plants. Do you think it would be better to place a fan blowing out the window?
 
Joe Blows Trees

Joe Blows Trees

Well-Known Member
VancouverBCBud said:
Temps are usually between 80-85 and I don't have a humidity gauge yet it's being shipped. I am using one fan to blow air up and out of the cool tube and the other to blow around the air/plants. Do you think it would be better to place a fan blowing out the window?
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Like @Nullis advised, you should have an exhaust out of the room. I have 3 fans, an AC unit, and I leave the door open to keep a fresh flow of air coming into the room. When it's lights out, I have a black piece of plastic I drape over the opening to keep out any potential light and still allow air to flow through.
 
ISK

ISK

Well-Known Member
VancouverBCBud said:
So my plants are in my room under a 400 watt MH, and relatively far from the two open windows of the room. All I have is 2 oscillation fans so i'm just wondering if these plants will end up with a lack of co2 and how much that could effect the growth. Thank you!
Click to expand...
depends how much air movement you get from the two windows....if they are on opposing walls then you should be okay

I've grown in a bedroom with only one open window, but used a fan to draw the air out.

BTW: how will you keep the light out during the dark hours?....or are you using auto's
 
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VancouverBCBud

New Member
ISK said:
depends how much air movement you get from the two windows....if they are on opposing walls then you should be okay

I've grown in a bedroom with only one open window, but used a fan to draw the air out.

BTW: how will you keep the light out during the dark hours?....or are you using auto's
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Both windows are unfortunately west facing so I might have to direct one fan out the window to get some fresh air in here. If I just allowed the natural air movement of say 1 window would the plants likely end up with a co2 deficiency or will their still be a decent amount as it is a relatively large room. Also, how much does someone being in the room, breathing out co2 effect the levels, I will be in here a lot. As for light I have blinds on the windows and their is a doorway between the plants and the main portion of the room with a door that can be closed if need be to reduce light even further. If I close this door however their will be no fresh air getting to the plants but the 12 hours of darkness should all actually be night time so I think that will be fine.

If anyone is interested or feels like pictures would be helpful let me know and ill try and take some that show how everything is set up, thanks for the help so far!
 
ISK

ISK

Well-Known Member
VancouverBCBud said:
Both windows are unfortunately west facing so I might have to direct one fan out the window to get some fresh air in here. If I just allowed the natural air movement of say 1 window would the plants likely end up with a co2 deficiency or will their still be a decent amount as it is a relatively large room. Also, how much does someone being in the room, breathing out co2 effect the levels, I will be in here a lot. As for light I have blinds on the windows and their is a doorway between the plants and the main portion of the room with a door that can be closed if need be to reduce light even further. If I close this door however their will be no fresh air getting to the plants but the 12 hours of darkness should all actually be night time so I think that will be fine.

If anyone is interested or feels like pictures would be helpful let me know and ill try and take some that show how everything is set up, thanks for the help so far!
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Ok, so your room is similar to what I used once...I'll attach a link if you want to see what I did to preventing light from leaking in or out.
https://www.rollitup.org/t/my-mexican-ditch-weed.782737/

The amount of Co2 you breath out doesn't make a huge impact, but can't hurt either.

I used an extra layer of curtains, plus this dark tarp over the curtains
DSC01689.JPG

and a tarp in front of the door to the hallway, to help contain any light and/or smell
DSC01768.JPG
 
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