How do plants respond if there is not enough fresh intake?
- Thread starter Budsworth
- Start date
Budsworth
Member
Like a Nitrogen deficiency yellow?
A
argoagro
Slowed growth from lack of co2, molds & fungus also like a lack of air exchange, and possible temp issues. I'm just throwing ideas out there and curious what others say.
^^^^ yep slow growth due to lack of co2
yep it'll look deficient as hell !!
how is the negative pressure on that room?
ive never once used an intake fan, i always go by the 30 second rule, the room has to be completely exhaust every 30 seconds. within that rule, the negative pressure makes more then a good enough intake....
G
gdawg
My room has zero intake or exhaust. I inject co2 and run my scrubber 24/7.
C
chefro420
Im curious about this too. I run my garden in a tarped off area of the basement. I have an a/c but no fresh air exchange , because of the cold or hot outdoor temps. I was thinking im prob losing out on yield as the plants prob use up the co2 after a few hours. How could I bring in fresh air when its 30 degrees outside?
You don't necesarily need to bring the air in from outside, you could bring it in from another part of the house.
Or just spend a couple hundred on co2 tanks.
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gdawg
Go with the co2 tanks and don't worry about exhausting dank air
can't remember the last time I exhausted. running co2 is a closed environment. Plants are fine. Air has a funny way of moving around on it's own.
do you have doors to your house open all the time or a window, probally not and you're still breathing.
do you have doors to your house open all the time or a window, probally not and you're still breathing.
statusquo
Member
If you aren't bringing in fresh air from somewhere (and you aren't running co2), you are drastically reducing your yields. The plants use up co2 a lot faster than that too, IIRC. I would at least want to add passive vents. As Krunch said, as long as you have passive intakes/an exhaust fan you don't need an intake fan. Personally I only shoot for completely exchanging the air in the room once a minute but this is personal preference.
Edit: bring in air from the house that's not 30 degrees.
Imona Potboard
New member
the amount of fresh air that needs to enter a grow room to keep co2 levels a natural levels is often grossly overestimated. All temp, odor, and rh needs aside, the actual fresh air intake needed is little more than a trickle to keep up plants respiration.
to answer the original question, The plants will not grow to their optimal potential and any increase in light, o2, nutes, and water will mean nothing without increased c02. Death would not occur due to certain leaks and door openings to replenish lost c02
to answer the original question, The plants will not grow to their optimal potential and any increase in light, o2, nutes, and water will mean nothing without increased c02. Death would not occur due to certain leaks and door openings to replenish lost c02
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chefro420
As i rent its not feasible for me to make huge holes in the floor for ducting. Also as it gets too cold outside, air intake is out too. Think Im going to just get the tanks. I used a cheapy co2 test last night. Outside air was 350-400, and the sample taken from the canopy was like 1/3-1/2 of that. So def need some fresh air or co2 going!
