Co2 in grow room high

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MArs78

MArs78

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Why is the co2 in my grow room around 1500. That’s without adding from the tanks. Could a room be so high on co2 that it wouldn’t need co2 from tanks. I’m confused, anyone experienced this?
 
Moe.Red

Moe.Red

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Are you growing in a basement? Is it winter where you are? If so, how do you heat the growspace and anything over it?

CO2 falls. My basement runs over the atmospheric 400PPM even in the summer because it is a well where CO2 collects. I actually want that, so I don't fix it. I probably average 600 - 650 PPM in the lung room. But 1500 is too high, you should get to the bottom of that. Maybe a hot water heater or something... fill in some details.
 
MArs78

MArs78

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If you take it outdoors it should read around 400. If you get that, you have something up in your grow space, it should not be 1500 PPM all the time IMO.
Yes I took outdoors and calibrated. What could it be? Maybe the dehumidifier? Should I shut it down and observe?
 
MArs78

MArs78

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Are you growing in a basement? Is it winter where you are? If so, how do you heat the growspace and anything over it?

CO2 falls. My basement runs over the atmospheric 400PPM even in the summer because it is a well where CO2 collects. I actually want that, so I don't fix it. I probably average 600 - 650 PPM in the lung room. But 1500 is too high, you should get to the bottom of that. Maybe a hot water heater or something... fill in some details.
It’s in a room above ground, and no winters in LA. No heaters, just the dehum, hvac on 76 degrees, oscillating fans. I’m assuming it’s the dehumidifier, I’m in 2nd week of flower, can I shut the dehum for a bit and observe any changes?
 
Observationist

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It’s in a room above ground, and no winters in LA. No heaters, just the dehum, hvac on 76 degrees, oscillating fans. I’m assuming it’s the dehumidifier, I’m in 2nd week of flower, can I shut the dehum for a bit and observe any changes?
What kind of dehum?

A dehum releasing co2?
 
MArs78

MArs78

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What kind of dehum?

A dehum releasing co2?
Regular 156 pint dehum, and i ‘‘twas somewhere that the outlet from the dehum increases the co2…. I don’t know, that’s why I’m here. I did get some install a vent that brings in fresh air from outside and the co2 dropped to 800 ish.
 
Observationist

Observationist

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Regular 156 pint dehum, and i ‘‘twas somewhere that the outlet from the dehum increases the co2…. I don’t know, that’s why I’m here. I did get some install a vent that brings in fresh air from outside and the co2 dropped to 800 ish.
800 sounds good
 
MercDod

MercDod

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Do you have anything with a pilot light, or any co2 tanks leaking? Not sure how much co2 can build up from people/pets but I would imagine some also.
 
Moe.Red

Moe.Red

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Regular 156 pint dehum, and i ‘‘twas somewhere that the outlet from the dehum increases the co2…. I don’t know, that’s why I’m here. I did get some install a vent that brings in fresh air from outside and the co2 dropped to 800 ish.
I'm struggling to understand how it is possible for a dehumidifier to create CO2. I 99% don't think it can.

Either you have a sensor that is out to lunch, or you have a problem.

But the OSHA standard for CO2 for humans is max 5000 PPM, so you are not going to die, but I would still want to figure out WTF is going on. This is NOT normal for an above ground space with no open flames heating the space and ~500PPM outside. If I were you, I'd take a look at what carbon monoxide levels are - this sounds like a flue on the Gas hot H20 is plugged with a birds nest or something like that. Or are you right next to the 405 and measuring at rush hour? Something odd is happening if the CO2 monitor can be believed.

Good news is the plants will love it.
 
MArs78

MArs78

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I'm struggling to understand how it is possible for a dehumidifier to create CO2. I 99% don't think it can.

Either you have a sensor that is out to lunch, or you have a problem.

But the OSHA standard for CO2 for humans is max 5000 PPM, so you are not going to die, but I would still want to figure out WTF is going on. This is NOT normal for an above ground space with no open flames heating the space and ~500PPM outside. If I were you, I'd take a look at what carbon monoxide levels are - this sounds like a flue on the Gas hot H20 is plugged with a birds nest or something like that. Or are you right next to the 405 and measuring at rush hour? Something odd is happening if the CO2 monitor can be believed.

Good news is the plants will love it.
Got it thanks…. By the way I am a mile from the 405, lol.
 
steamroller

steamroller

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I'm struggling to understand how it is possible for a dehumidifier to create CO2. I 99% don't think it can.

Either you have a sensor that is out to lunch, or you have a problem.

But the OSHA standard for CO2 for humans is max 5000 PPM, so you are not going to die, but I would still want to figure out WTF is going on. This is NOT normal for an above ground space with no open flames heating the space and ~500PPM outside. If I were you, I'd take a look at what carbon monoxide levels are - this sounds like a flue on the Gas hot H20 is plugged with a birds nest or something like that. Or are you right next to the 405 and measuring at rush hour? Something odd is happening if the CO2 monitor can be believed.

Good news is the plants will love it.

Got it thanks…. By the way I am a mile from the 405, lol.
Without implying anything negative, my first thought was L.A. ... 🤔
 
MArs78

MArs78

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Do you have anything with a pilot light, or any co2 tanks leaking? Not sure how much co2 can build up from people/pets but I would imagine some also.
I think it’s the tankless water heater. It’s right outside the grow area and it’s used very frequently. The entire area is quit small and I’m sure with every entry co2 mixed air gets sucked into the grow area. Thanks for mentioning pilot, that made me figure it out.
 
N1ghtL1ght

N1ghtL1ght

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Why is the co2 in my grow room around 1500. That’s without adding from the tanks. Could a room be so high on co2 that it wouldn’t need co2 from tanks. I’m confused, anyone experienced this?
you got people there in? what we breath out can make a difference after all there's only a little CO2 in the atmosphere...
monitor if it stays like that
 
Homesteader

Homesteader

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Are you in soil? Microbes in soil produce a lot of co2 when you add nutrition to the mix. They break down nutrients and expel CO2 to the levels you are talking about if not more depending how rich your soil is. Soil microbes can produce 10,000 ppm at the root level with high NPK mixes or fields.
 

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