I completely disagree with this statement. I was very paranoid about using CO2 in my area and before I decided on a sealed room, I was going to vent into my attic a few times a day. The attic sits above the rest of the house, so I did some research on CO2 levels and health.Quote:
Originally Posted by LOC NAR on probation
First off, United States law says that you can withstand 5000ppm of CO2 for 10 hours a day without any long term consequences at all. So 5000ppm of constant exposure, 10 hours a day, 5 days a week, for 20 years, and there were no ill effects. Considering my grow room never reaches above 1500ppm, and if I open the door the level is instantly dropped by over 300ppm and within 30 seconds is dropped to below 1000ppm, its not dangerous to be in my grow room even for prolonged periods of time. If I was venting into the house, which I still wouldn't like cause CO2 aint good for you (it just aint that bad either), then my attic is about 8x the size of my grow room so the CO2 would dissipate to a level barely above ambient (ambient around here is around 500ppm).
Now, that being said, there is research showing that some people feel the immediate short term effects of CO2 almost instantly when above say 1200ppm. Generally this is limited to feeling a little tired and lethargic, but the second you reach fresh air this feeling should immediatly disapear. Me? If I felt tired everytime I went into my grow room, well Id never get anything done.
The only time I have ever felt like CO2 affected me (ive been using it for a couple years), was after working in one of my rooms for about 2 hours in 1600ppm CO2 and 90 degree heat. I started to feel a little tired and faint, but I attribute this mainly to the lack of fresh oxygen (displaced by the CO2) and the high heat and hard work. Toxic CO2 levels are above 10,000 ppm. Even if you left your CO2 tank on full blast in a small grow room for hours and then locked yourself in it...you still wouldnt be beyond 2000ppm I can almost guarantee it (that is unless you actually have a real, fully waterproof and sealed room).
Co2 can be a scary thought but harmful? I really dont agree with that. Now I do believe though that CO2 should be the LAST thing you add to your grow operation, as its entirely possible to yield over 2 pounds per light, rather easily, without CO2. Ive found CO2 to specifically fill the buds in, not really make them larger. Just really, really dense.
Flame away.