So maybe I've come across a fantastic discovery, or maybe I'm just stoned... I noticed the thread about letting C02 fire extinguishers slowly leak out in grow tents, and that got me thinking about a smaller, cheaper method of getting more C02 to your plants. Suppose I got a pair of children's water wings(kids wear them to help with swimming) and blew them up, then placed them in a small grow cabinet and let the air I blew in slowly seep out of the valves. In your opinions; would this actually make a difference to the C02 levels inside the cab or would I just be wasting my time? I'm not sure how much influence the dimensions of the cab would have with gas levels, I'm not too good with that kind of science.
Anyone think this might work?
- Thread starter Mr Pengra
- Start date
Hook up straws to your nostrils, run fish aquarium tube from the straws to your intake, while you sleep.
Horrible thing is that my cab is right next to my bed so I really could...
co2 is heavier than air so many many many water wings' worth of co2 are sitting on your floor right now. In the day your plants want co2 but after lights off they want oxygen.
M
mrred
do you know about sugar and yeast to make co2?
Think I'll just stick to a CO2 bottle, how about a blow up sex doll?
Yeah, but I'm pressed for space inside the cab and its a stealth grow so I cant have any external systems.
you dont need extra co2, they do just fine with normal airflow through the cab.
B
bipotato
I've been preaching this forever on various forums (incl. this one in the past) but no one is willing to listen, so I'll just give the short version this time: effective CO2 enrichment is far, far beyond "the bottle" (or bucket, or burner, or whatever your method of production is). Unless you have a method of correctly dosing the right amounts and maintaining (that's the key) those levels in that environment (and that environment must be pretty ideal to begin with), all you will obtain is a placebo effect and an empty wallet.
The best thing you can possibly do as a "small grower" for CO2 enrichment is to invest in a larger intake/exhaust fan and up the number of air exchanges per minute. This will give you actual results, while most alternatives will give you, at best, a placebo effect.
The best thing you can possibly do as a "small grower" for CO2 enrichment is to invest in a larger intake/exhaust fan and up the number of air exchanges per minute. This will give you actual results, while most alternatives will give you, at best, a placebo effect.
B
bipotato
By the way, your environment (temp/humidity, mostly) will make a huge impact on how much CO2 is taken up by the plants. If I run my room at 75-77F, 1500ppm -> 0ppm will take much longer w/ the tank off than at 83-85F.
M
mrred
How do you monitor co2 levels?
B
bipotato
Very carefully.
A person at rest inhales and exhales about 500 ml with each breath. That air consists of 150 ml of recently inhaled air that is in the larger air passages (where no exchange of gases between the lungs and blood stream occurs) and 350 ml of air that has been in the alveoli of the lungs. Thus, 150 ml of the 500 ml may be considered atmospheric air (approximately 0.04% carbon dioxide by volume), and 350 ml of the 500 ml may be considered alveolar air (approximately 5.3% carbon dioxide by volume). The average carbon dioxide content of the 500 ml of exhaled air is:
[(150 ml)/(500 ml) x 0.04% CO2] + [(350 ml)/(500 ml) x 5.3% CO2] = 3.7% CO2 by volume, which is equivalent to 5.7% CO2 by weight.
Some other interesting info on CO2 for the fans out there.
http://cdiac.esd.ornl.gov/pns/faq_othr.html
[(150 ml)/(500 ml) x 0.04% CO2] + [(350 ml)/(500 ml) x 5.3% CO2] = 3.7% CO2 by volume, which is equivalent to 5.7% CO2 by weight.
Some other interesting info on CO2 for the fans out there.
http://cdiac.esd.ornl.gov/pns/faq_othr.html
