Question: Sealed CO2 room

futuretech

futuretech

Active Member
Hi everyone,

Been reading a thousand articles about CO2, but there is a point I don't find anywhere and I hope someone can give me a proper answer.

I personally use Aeroponics systems, made by myself with some sprinklers they are not high pressure but work just fine (similar to the system "SEEMOREBUDS - 15 pounds in 80days" used)...

My question is, if the plants like a higher PPM of CO2 for photosynthesis, what about the Roots? Don't they need OXYGEN?
I mean if I run a SEALED CO2 room, how can I feed the roots proper OXYGEN as the Aeroponics is all about that? Or does the roots don't require Oxygen but CO2?

I read threads where people run the sealed environment 24/7, they don't circulate any air, all they do is control the humidity and temperatures with portable ac, and i wonder how their plants don't develop root rot.

Thanks everyone :bigjoint:
 
G

GreenGuy_1995

Well-Known Member
I run a sealed environment 24/7 - except when I go in and out of the room - and I don't vent any air. I have a mini-split, bottled CO2 on a controller and a dehumidifier.

I grow in 7 gallon pots of amended Fox Farm Ocean Forest and have never had any root rot issues. I've been running sealed for something like 8 or 9 years now.

Roots need oxygen, not CO2.

I'm not sure about your sealed setup, but if you feel that your roots aren't getting enough oxygen to support the level of growth you are expecting, then you can try injecting it into your Aeroponics system or reservoir. T

The oxygen holding capacity of water is dependent on temperature. I believe 68 degrees is the best temp to support highest levels of dissolved oxygen in water - at least that's what my research pointed to when I was growing with a RDWC system.

I'd probably make sure your water is at the appropriate temperature first, before trying to inject oxygen into the system. If that doesn't help, or your water temp is already at 68 degree range, then possibly try enriching the water in the system with an auxiliary air pump located outside of the CO2 enriched environment.

Hope this helps, good luck!
 
futuretech

futuretech

Active Member
Thanks for the answers, right now I’m not using any cO2, but as my grow as a good environment in general cO2 could be the next upgrade, just don’t want the roots to lack of oxygen.
 
Renfro

Renfro

Well-Known Member
The reason for wanting oxygen at the roots is because oxygen deters anaerobic bacteria such as those that cause root rot. This is why we are concerned with dissolved oxygen levels in DWC (roots constantly submerged).
 
Coalcat

Coalcat

Well-Known Member
Renfro said:
Just for perspective, 1000 PPM CO2 is the same as 0.1 percent CO2. That is not going to displace a significant amount of oxygen.
Click to expand...
This is exactly right. Still plenty of oxygen. Your only supplementing a tiny fraction % but it makes a difference for photosynthesis if all other things are optimal (light, temp, nutrients etc)
 
Keesje

Keesje

Well-Known Member
Driver733 said:
The process of photosynthesis turns co2 into oxygen, so there should be plenty of oxygen available in the sealed room.
Click to expand...
No, that's not true. For sure the plants produce oxygen but not enough for them.
That would be a Perpetual Motion and as in physics it is also impossible in biology.

@futuretech
No need to change a thing. Do not inject O2 in your water or whatever solutions people come up with.
Although your room is sealed, there is more then enough O2 for many many days. And every time you visit your room, you bring in new O2.
Besides that: Your room probably is not 100% sealed. It costs a fortune to create a totally sealed room. So O2 will slip through tiny holes anyway.

So also forget about getting root rot for this reason. Root rot can occur because of many reasons.

Your roots will get plenty of O2 in gaseous state. That is one of the benefits of your system. No need for DO.
 
nunyabidness420

nunyabidness420

Well-Known Member
If I recall correctly from my aquarium days, the amount of dissolved oxygen in water is independent from the amount of dissolved co2.
 
Keesje

Keesje

Well-Known Member
nunyabidness420 said:
If I recall correctly from my aquarium days, the amount of dissolved oxygen in water is independent from the amount of dissolved co2.
Click to expand...
Dissolved Oxygen is an irrelevant factor in a system like Aeroponics with sprayers.

Renfro said:
The reason for wanting oxygen at the roots is because oxygen deters anaerobic bacteria such as those that cause root rot. This is why we are concerned with dissolved oxygen levels in DWC (roots constantly submerged).
Click to expand...
The main reason plants need O2 is because it is used for turning glucoses into energy. I think it is called 'respiration' in English.
 
M

MissTHC

Active Member
GreenGuy_1995 said:
I run a sealed environment 24/7 - except when I go in and out of the room - and I don't vent any air. I have a mini-split, bottled CO2 on a controller and a dehumidifier.

I grow in 7 gallon pots of amended Fox Farm Ocean Forest and have never had any root rot issues. I've been running sealed for something like 8 or 9 years now.

Roots need oxygen, not CO2.

I'm not sure about your sealed setup, but if you feel that your roots aren't getting enough oxygen to support the level of growth you are expecting, then you can try injecting it into your Aeroponics system or reservoir. T

The oxygen holding capacity of water is dependent on temperature. I believe 68 degrees is the best temp to support highest levels of dissolved oxygen in water - at least that's what my research pointed to when I was growing with a RDWC system.

I'd probably make sure your water is at the appropriate temperature first, before trying to inject oxygen into the system. If that doesn't help, or your water temp is already at 68 degree range, then possibly try enriching the water in the system with an auxiliary air pump located outside of the CO2 enriched environment.

Hope this helps, good luck!
Click to expand...
Hey, just wondering what you ammend your FFOF with
 
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