[Maddison]

Guys new grower here just setting up my equipment last thing I need to order is my carbon filter kit!

I got thinking...

My grow tent is in my bedroom as I literally have no where else to put it, would it affect me atall I have a child that sleeps in the bed with me would carbon monoxide be a problem?? I'm not very clued up about things so this is an important ask!!

Thanks guys!

 

[Thukah]

Guys new grower here just setting up my equipment last thing I need to order is my carbon filter kit!

I got thinking...

My grow tent is in my bedroom as I literally have no where else to put it, would it affect me atall I have a child that sleeps in the bed with me would carbon monoxide be a problem?? I'm not very clued up about things so this is an important ask!!

Thanks guys!

CO from what exactly, sorry kind of confused. The plants will be emitting oxygen as they are a plant lol.

 

[Itscheese94]

Guys new grower here just setting up my equipment last thing I need to order is my carbon filter kit!

I got thinking...

My grow tent is in my bedroom as I literally have no where else to put it, would it affect me atall I have a child that sleeps in the bed with me would carbon monoxide be a problem?? I'm not very clued up about things so this is an important ask!!

Thanks guys!

ideally you would want the extraction leaving the room. i have slept in my room with my tent for a few years. i dno the health side effects of it. but i seem ok a quick google search would be a good idea. it is the tent / fan noise thats a problem when sleeping, i have my extractor turned off when sleeping in the room if that helps.

 

[Maddison]

CO from what exactly, sorry kind of confused. The plants will be emitting oxygen as they are a plant lol.

I know I sound dumb I probably am. Dont they breathe at night releasing co2 prob not enough to harm that's why I just wanted to double check

 

[DanielWesterfield]

Plants do the uptake while the lights are on, I'm guessing while you and your child are sleeping the lights are off. But you two being in the room breathing all night is giving them a good amount. And if you are worried of CO2 bottle somehow, candles really do wonders as well. CO2 meters will show you the facts. Good luck on getting everything set up along with your first grow. What genetics are you planning on popping?

 

[orggrwr]

I have had at least 1 tent in my bedroom for years with no problems. Plants actually use Co2 and release oxygen while we do the opposite so it's a good relationship. No worries about carbon filters hurting you or your children as they will pull any impurities from the air. I could be wrong but I believe grow tent exhaust is probably healthier air to breathe than that found in your average house. Again I have no data to support that but it seems logical.

 

[ArtfulCodger]

CO2 is carbon dioxide...the stuff we exhale. Plants breathe that in and breathe out oxygen. It's a mutually beneficial relationship in that way. CO is carbon monoxide...the poisonous stuff in car exhaust. Not a part of the plant equation.

 

[Ninjadogma]

You shouldn't have any harmful gas emissions (carbon monoxide) from growing cannabis unless you're using propane heaters or something. Child protective services could raise a stink for having a child near where it's growing so be mindful of that if someone you know wants to make trouble or if law enforcement or CPS happen to drop by... Could elevate it all the way to child endangerment charges or it could be an issue raised in custody proceedings. As for CO2 (Carbon dioxide), the plant will consume it from the air during photosynthesis but does not produce any. They produce small amounts of oxygen as a byproduct but not levels high enough for humans to benefit much. There is no CO2 consumption going on when the lights are off because no photosynthesis is going on. You also shouldn't need to add supplemental CO2 either, just make sure you have fresh air being vented into the tent where levels will be about 400ppm or the same levels found in the air we breathe.

 

[LoveGrowingIt]

CO2 could be a problem. The plants respire continuously, which means they take in oxygen and release carbon dioxide. It's the opposite of what happens when they transpire. They don't transpire when the lights are off, however. So, CO2 can become excessive during the plant's night. The humans in the room are also release CO2. Together, dangerous levels of CO2 can accumulate. Using a CO2 monitor in the room, therefore, is a good practice. We have one made by Inkbird, but there are others available. I once set off the high CO2 alarm while doing yoga in the room. So, it's something to consider. CO2 can be a killer.

 

[Florida_Mike]

C'mon now L.G.I., I respect you and most of the advise you
give people; but don't scare the girl. Plants respire very little
Co2 & nowhere near enough to be dangerous to pets or
humans, especially w/ only 3 plants in a well ventilated
room. You can safely work in a sealed grow room
cranking 1500ppm of Co2 with no problem; at the very
worst, maybe a little light headedness.

From the web: (*highlights are mine)


do they release enough co2 to be dangerous to pets or humans?

Dangerous CO₂ levels start at 5,000 ppm, and serious effects occur at 40,000+ ppm.
*Even in a completely sealed room with hundreds of plants, CO₂ levels from respiration alone would not reach dangerous levels.
Humans exhale much more CO₂ than plants at night—around 20,000 mL per hour compared to a plant’s 50-200 mL.

Cannabis plants do not release enough CO₂ during the dark period to be dangerous to humans or pets.
How Much CO₂ Do Cannabis Plants Release at Night?

A mature cannabis plant may release 50-200 mL of CO₂ per hour through respiration.
A dense canopy (1 m²) might increase CO₂ levels by 50-200 ppm overnight *in a sealed grow room.
In a ventilated space, this CO₂ is quickly diluted and does not pose any risk.

Is This Dangerous?

Dangerous CO₂ levels start at 5,000 ppm, and serious effects occur at 40,000+ ppm.
Even in a completely sealed room with hundreds of plants, CO₂ levels from respiration alone would not reach dangerous levels.
Humans exhale much more CO₂ than plants at night—around 20,000 mL per hour compared to a plant’s 50-200 mL.

The O₂ uptake is relatively low, much less than what a human or pet breathes.
A dense canopy of cannabis plants in a sealed room could slightly reduce oxygen levels, but not enough to cause concern in a ventilated space.

Key Takeaways:

Cannabis plants DO take in oxygen at night.
They release CO₂ as a byproduct of respiration.
In a well-ventilated grow room, this is not a problem.
If a grow is completely sealed, oxygen levels could drop slightly, but not dangerously.

 

[Ninjadogma]

CO2 could be a problem. The plants respire continuously, which means they take in oxygen and release carbon dioxide. It's the opposite of what happens when they transpire. They don't transpire when the lights are off, however. So, CO2 can become excessive during the plant's night. The humans in the room are also release CO2. Together, dangerous levels of CO2 can accumulate. Using a CO2 monitor in the room, therefore, is a good practice. We have one made by Inkbird, but there are others available. I once set off the high CO2 alarm while doing yoga in the room. So, it's something to consider. CO2 can be a killer.

In a closed environment the levels of oxygen and CO2 more or less change places during respiration between night and day and it's almost a net effect, but in the end there is slightly more oxygen. When they talk about the huge carbon footprint with weed it's the electricity running the lights, heater and other power consumption. Nobody is going to die or even get sick from carbon dioxide poisoning growing marijuana indoors, with the exception being maybe if you used a pressurized tank of it in a poorly ventilated tent.

 

[HerbalEdu]

is it dangerous to have carbon filter in the bedroom ?

There is nothing in the air output that would be of concern. There is probably more pollution in the air we breathe on a daily basis that could hurt you than the output of the carbon filter.

is it dangerous to have plants in the bedroom ?

This has led some people to worry that having plants in the bedroom could deplete oxygen levels during the night. However, it's important to note that the amount of carbon dioxide released by plants at night is minimal and unlikely to have any significant impact on your room's oxygen levels.

 

[amneziaHaze]

if you keep the light from i dont know 21:00 -> 9:00 plants would get all the co2 you give out making for an even better grow.and in exchange you and your kids would get freshly made o2 giving you even better sleep time. as long as the humidity is not weird

 

[mstrpkl]

Lol everyone talkin about carbon dioxide she just mixed up the purpose of a carbon filter lol

Your plant and equipment should not be producing any carbon monoxide at all, and little to no carbon dioxide. Carbon filter is just for keeping the smell down. So you dont need it unless you are trying to keep your grow a little more stealthy.

 

[LoveGrowingIt]

C'mon now L.G.I., I respect you and most of the advise you
give people; but don't scare the girl. Plants respire very little
Co2 & nowhere near enough to be dangerous to pets or
humans, especially w/ only 3 plants in a well ventilated
room.

To be forewarned is to be forearmed, as the saying goes. There's potential danger. I don't know if it's a well-ventilated room or if the occupants are healthy or the age of the child. They also could be asleep and unaware. That said, now she knows enough to be aware of it.

There are simple solutions. As @amneziaHaze said, running the lights while the humans are sleeping is a good idea. Leaving a door or window open is another possibility. Using a CO2 monitor is yet another, and it's also interesting to see how the CO2 level changes.

You can safely work in a sealed grow room
cranking 1500ppm of Co2 with no problem; at the very
worst, maybe a little light headedness.

I wouldn't consider that safe, but for otherwise healthy people who are awake, alert and able to leave the room, you're right, it probably isn't dangerous. Sleeping for eight hours in a high CO2 level, however, is another matter. Apparently, duration of exposure matters. CO2 can stay in the blood for as long as 24 hours. The danger involves displacement of oxygen in the blood.

 

[Kindon67]

Guys new grower here just setting up my equipment last thing I need to order is my carbon filter kit!

I got thinking...

My grow tent is in my bedroom as I literally have no where else to put it, would it affect me atall I have a child that sleeps in the bed with me would carbon monoxide be a problem?? I'm not very clued up about things so this is an important ask!!

Thanks guys!

You can rest easily. Plants give off oxygen, they use carbon dioxide (not carbon monoxide) for the photosynthesis process. I’ve found that ventilating my tent in bedroom is very healthy. Not only do you raise the oxygen in the room you also increase the humidity, which can also help with dryness. I wake up breathing better. However if your home has issues with high humidity you might consider ventilating fan out a window. I did that for a couple years until I was told in THC Farmer that I was wasting good air. Once my plants had more leaf it became hard to get humidity down as it was sucking the humid air back in. So at that point I vent it out the window again and utilize a dehumidifier. Just note if in-line fan is not running you run the risk of outside air back drafting through vent. So putting a damper between fan and window vent would be good idea. I am not an expert but I’ve been pretty successful using this train of thought.

 

[LoveGrowingIt]

Lol everyone talkin about carbon dioxide she just mixed up the purpose of a carbon filter lol

Right. Carbon filters aren't dangerous. They're probably healthy.

Your plant and equipment should not be producing any carbon monoxide at all, and little to no carbon dioxide. Carbon filter is just for keeping the smell down. So you dont need it unless you are trying to keep your grow a little more stealthy.

Also right. Carbon monoxide isn't involved.

Well... I have a CO2 monitor in my grow room, which is (was) a bedroom. The monitor has reached 1,200 ppm and 800 ppm isn't unusual. It's highest at the end of the lights-off period. It's also highest when the plants have the most leaf matter. Small plants don't do much at all. Normal CO2 level in the room ranges between 450 to 550 ppm.

 

[LoveGrowingIt]

You can rest easily. Plants give off oxygen, they use carbon dioxide (not carbon monoxide) for the photosynthesis process. I’ve found that ventilating my tent in bedroom is very healthy. Not only do you raise the oxygen in the room you also increase the humidity, which can also help with dryness. I wake up breathing better.

Plants both transpire (use carbon dioxide and produce oxygen) and respire (use oxygen and produce carbon dioxide). They only release oxygen when the light is on, which is, as you say, part of the photosynthesis process, but they also produce carbon dioxide. Respiration produces far less gas in comparison to transpiration, but it occurs continuously, both day and night. Fortunately for us, their net oxygen output is greater than their consumption.

 

[LoveGrowingIt]

I respect you and most of the advise you
give people

Thanks. Likewise. Sorry I didn't say that sooner.

I've engaged in CO2 discussions many times. The advice is usually wide-ranging. To me, it's mostly a matter of understanding plants (and ourselves). It's fascinating how well they adapt to their environment (which includes us).

 

[Florida_Mike]

To be forewarned is to be forearmed, as the saying goes. There's potential danger. I don't know if it's a well-ventilated room or if the occupants are healthy or the age of the child. They also could be asleep and unaware. That said, now she knows enough to be aware of it.

There are simple solutions. As @amneziaHaze said, running the lights while the humans are sleeping is a good idea. Leaving a door or window open is another possibility. Using a CO2 monitor is yet another, and it's also interesting to see how the CO2 level changes.


I wouldn't consider that safe, but for otherwise healthy people who are awake, alert and able to leave the room, you're right, it probably isn't dangerous. Sleeping for eight hours in a high CO2 level, however, is another matter. Apparently, duration of exposure matters. CO2 can stay in the blood for as long as 24 hours. The danger involves displacement of oxygen in the blood.

I'm glad this convo came up, it reminded me to check my nighttime CO2 levels now that I have both tents on 12/12. It actually (pleasantly) surprised me. That 810ppm is with two adults & two large dogs, no added CO2 (yet). My grow room is about 3 feet lower than the main living area, which makes it a natural CO2 sink. I never would have guessed it would get that high, it usually runs around 500-600 during lights on; so that's right at the 200ppm rise that was talked about above. The meter is ACI calibrated to outside air @ 400ppm, so I believe it to be somewhat accurate & reliable. I'll have to bring the meter/controller up here in the living area to see what is up here. My curiosity is now peaked, my guess is around 500ppm.

I don't consider those levels unsafe in any way and as you can see, my momma plant under a cheap 40w led, 24/7, is eating it up.

I worked many years as both an Operator and Foreman on a Mainline Underground Utility crew and I had to have First Aid, CPR & both OSHA & MSHA and Competent Person training, bc of the trenching & confined spaces. As a foreman I had to monitor & log the air quality my men were working in. I don't remember all the nuances of it, but a quick search shows the OSHA regs:

The Occupational Safety and Health Administration (OSHA) has set a Permissible Exposure Limit (PEL) of 5,000 parts per million (ppm)of carbon dioxide (CO2cap C cap O sub 2) for an 8-hour workday. This is also known as the time-weighted average (TWA).


In a home grow setting we're talking 1400-1500ppm max with CO2 supplementation, well under 1000ppm without; no big deal. If it's good enough for OSHA, it's good enough for me. There is no need to be an alarmist. No offense, but if someone is that worried about it, they're probably in the wrong hobby. just my .02