It will remove the same amount of odor whether you are exhausting outside or inside. A proper sized CAN and fan will remove ALL of the odor. But in a sealed room you are not exhausting outside of the room. period.
Which is exactly why we use dehumidifiers.
Yes, 100% CO2 will kill you and the plants. I said up to 10,000 PPM would not kill a plant NOT that you couldn't kill a plant with CO2. It is a bit hard to do with 20lb tank and a leaky room, but still be careful, it could happen.
1500 PPM is not filling a room with CO2 but yes you want to maintain a constant 1500 PPM. Which is exactly what the CHHC-1 does. You set it to 1500 PPM and connect your regulator and it measures and makes sure the room is always at 1500 PPM.
How much CO2 they can use depends on their other limiting factors such as light, water, and nutrients. Generally around 1500 PPM should be enough.
Thank you, I will. I hope you have a great harvest.
Now, let's keep this thread about the CHHC-1 and leave the sealed room debate for another thread.
the room will continously produce more stink, so unless ur srubber is right beside the a/c, then it will be mixed air and it will have a smell. its called common sence...
my room is completely sealed with poly and silicon, AND there are ducting vents in and out of my room for intake/exhuast. i think we have different ideas about what is ment by a sealed room, i.e. the idea isn't to eliminate the exhaust.... my intake and exhaust are on timers and they will coordinate with co2 injection so the plants have the best of both worlds.
ok, since it's obvious you dont know anything about co2, i'll be nice and post a couple little links to save ur life...
http://www.greenmanspage.com/guides/advanced.html
http://dhs.wisconsin.gov/eh/chemfs/fs/CarbonDioxide.htm
co2 level in atmosphere is about 300ppm, 2000ppm WILL BURN PLANTS. 5000 ppm WILL KILL PLANTS and prolonged exposure to this environment will give humans BRAIN DAMAGE. but prolonged exposure to an environment with higher amounts of co2 than 5000ppm can KILL HUMANS. 10000ppm??? thats only 0.01% concentration of co2 in the air but CAN and WILL KILL.... now i'm curious.... do you even understand how ppm is measured?? u said co2 is harmful to plants and humans when the air is almost 100% co2!! come on now... that's complete nonsense. brain up, free ur mind, and quit regurgitating what ideas u formed in ur head... ur advise could kill someone! co2 can be extremely dangerous if low enough levels aren't maintained. This is also why people exhaust their rooms. the articles i just found 4 u even talk about need for proper exhaust and air circulation...
so 1500ppm is more than enough co2 in the room
the reason i was drawn to the chhc1 in the first place is the fact that u plug ur exhaust fan into 1 receprical, and co2 device into another, and the chhc1 automatically kicks one in while killing the other. so i'm pretty sure the room's ment to be exhausted
this must be ur first grow with co2, otherwise u'd be a vegetable or dead.........
keep seeking knowledge....
oh, and i wasnt lookin 4 ur approval or disagrements with my posts. i know i'm right, and all ur responses have either been stating the obvious or completely out to lunch... i'm pretty sure ur the last guy here qualified to give advise on co2 since ur page says this is the first time u've grown, at least at this level....
p.s. don't be such a smart ass next time and i'll try not to make u look like too big of a dumb ass, are rooms arent too different, with exhaust, i think u'd have a great setup