Consequences of CO2 Deficiency

Furthur

Furthur

Active Member
I have an under the stairs closet that I built with particle board, the main grow area before the steps start getting too low is about 4x4x7.

I don't have any kind of intake or exhaust and I'm planning on running a remote ballasted high bay converted 400w MH.

The room is in the basement so it stays cool enough and I have a fan for circulation but I was just wondering, what will be the consequences of CO2 deficiency if I don't have intake and exhaust.

Would the plants just not produce enough food and grow slowly?

I'm not adverse to adding an intake but I don't really want to exhaust because then I'd have to get an inline carbon filter (I'm getting a couple febreze carbon odor eater things I saw some people using and if that's not enough I'll build a DIY carbon filter but still don't want to exhaust it outside the closet) and I've already spent too much on this whole project and I don't want to have too many holes in the closet as it needs to be stealth.

I wasn't sure what having an intake but not an exhaust would do? Can that work? / would that provide enough CO2?

I've read about the DIY yeast / sugar CO2 bottles / buckets but as there is no way to control the amount released I wasn't sure if that would be a good way to go.

------------------

here's a summary of my questions:

what will be the consequences of CO2 deficiency if I don't have intake and exhaust?

Would the plants just not produce enough food and grow slowly?

I wasn't sure what having an intake but not an exhaust would do? Can that work? / would that provide enough CO2?

thanks in advance,

Furthur
 
F

fraGx

Active Member
Furthur said:
I have an under the stairs closet that I built with particle board, the main grow area before the steps start getting too low is about 4x4x7.

I don't have any kind of intake or exhaust and I'm planning on running a remote ballasted high bay converted 400w MH.

The room is in the basement so it stays cool enough and I have a fan for circulation but I was just wondering, what will be the consequences of CO2 deficiency if I don't have intake and exhaust.

Would the plants just not produce enough food and grow slowly?

I'm not adverse to adding an intake but I don't really want to exhaust because then I'd have to get an inline carbon filter (I'm getting a couple febreze carbon odor eater things I saw some people using and if that's not enough I'll build a DIY carbon filter but still don't want to exhaust it outside the closet) and I've already spent too much on this whole project and I don't want to have too many holes in the closet as it needs to be stealth.

I wasn't sure what having an intake but not an exhaust would do? Can that work? / would that provide enough CO2?

I've read about the DIY yeast / sugar CO2 bottles / buckets but as there is no way to control the amount released I wasn't sure if that would be a good way to go.

------------------

here's a summary of my questions:

what will be the consequences of CO2 deficiency if I don't have intake and exhaust?

Would the plants just not produce enough food and grow slowly?

I wasn't sure what having an intake but not an exhaust would do? Can that work? / would that provide enough CO2?

thanks in advance,

Furthur
Click to expand...
You're plants will grow much slower and weaker. If I were you I'd atleast get an exhaust fan and if there are some slots for air to travel through it will and you're plants will be fine. Also The yeast sugar idea is very good because the plants can't ever get too much co2 it's one of the main things they use in photosynthesis. With the yeast idea it won't be too much and it's cheap to make and easy to use, But then again what do I know this is my second post. Good luck and Happy Growing.:joint:

Oh yeah, those little computer fans 88mm are good for ur size room. I suggest atleast one intake and one exhausting fan. If they're not doing good still co2 them up or just get two more fans. 2 exhaust up top and 2 intake at the bottom. Also get a fan blowing on them constantly even a little fan down in the corner blowing up towards them. GL
 
DownOnWax

DownOnWax

Well-Known Member
Dude unless you have an air tight grow room then there is no possible way to keep the Co2 out.

I grow in a basement also and have never had a problem with Co2 deficiency, it's everywhere man! :)
 
TheGreatPretender

TheGreatPretender

Active Member
the yeast n sugar method is easy.. i took a 2liter bottle, but a pen sized hole in the cap, just over half filled with water, half a pack of yeast and 2 cups o sugar.. thats it.. shake it a bit 2x a day. works wonders... (dont worry if its not bubbling much when lights are out.. plants use little to no CO2 in the dark.. you could double everything and use a gallon milk jug.. in the 2 liter you have to change like once a week
 
BigBudBalls

BigBudBalls

Well-Known Member
I don't have a basement anymore :(

But my indoor CO2 levels are about twice that of the outside. (yes, I have measured them)

Not knowing your basement, its tough to say. but shooting from the hip, don't sweat it. (finished basement, 1/2 finished and on the unfinished side, ground level basement (on a hill)??)

If you can leave it/the door as open as possible. Its a basement, so it shouldn't need to be ultra stealthy 24/7.
 
Ronjohn7779

Ronjohn7779

Well-Known Member
Just buy a small CO2 canister and your problem is salved. Yeast and sugar smells funky at times and you may not want to deal with that. Some other alternatives smell bad too. Just to give you the heads up.
 
Mcgician

Mcgician

Well-Known Member
If you don't have enough oxygen, added Co2 won't do you any good. Oxygen getting to the roots is just as important as Co2 in photosynthesis. Bottom line, you need to get some air in there and forget the co2.
 
B

bunnyweed

Well-Known Member
if there's CO2, then the plants are constantly converting it to oxygen. So if u have CO2, you will never have an O2 problem, as the plant will vigorously convert the available CO2 to O2.
Just wanted to point that out.
 
BigBudBalls

BigBudBalls

Well-Known Member
TheGreatPretender said:
also.. CO2 is denser than oxegen.. so chances are you basement may have more than upstairs anyways..
Click to expand...
Its not *THAT* much heavier, it just barely. Think about it. If its that heavy (like argon is) it wouldn't be a greenhouse gas destroying the ozone layer.

CFC's and HCFC's are heavier too. Same deal.
 
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