Keep losing my CO2...

well im betting on......
1. dont forget plant usage alone will drop it.
2. the window ac will have loss.
3. the light ducting. double check all clamps, then use a good aluminum tape to seal everything. or a mastic.

simple. get a spray bottle and load it up with carbonated water. you know? the water that has the bubbles like soda? well yea just fill up a spray bottle with that and spray the plant. BUT BE WARNED. If you spray water while in the flowering stage. YOU WILL GET MOLD

that was useless.

It most likely either from leaks in the vents somewhere..... ur a.c. for sure.... also CO2 is heavier then air and settles to the floor rather quickly....

So between ur plant using it, and it settling depending on where your ppm meter is placed that could also be a cause to what seems like a much larger then in reality is occurring.

Hey boo, guess what,.. you're a flippin idiot.

Superstoner1: Thanks for the input. I wish my plants were eating the CO2 that fast man, but at the moment i only have a few small plants in veg in the whole 12x11x9 grow room, no way their eating up 900ppm of CO2 in less than an hour. Also, i question how a properly installed window AC unit would remove air from the grow room? Check the below picture out man, it's a pretty good representation of exactly how my AC is designed and laid out. You see where the air comes in warm, and goes out cool? See that wall behind the blower? Well mines the same way, and that divider between the cool front parts, and the hot back parts, in mine is a 2" thick solid hunk of styrofoam. So warm air from my grow room gets sucked in the front bottom, goes straight up right away, over the cooling parts in the very front, and out the front top. Never mixing with the air from the back, so i should never lose any air from the room if i understand it correctly.
air_conditioner.jpg
Mind you my setup is a bit unorthodox, and i would totally love someone to tell me where i went wrong, but to date i can't find a flaw in my design. I couldn't mount the AC unit in a window, so i set it into a crawl space above the closet in the room, and i built an airtight flew for its hot exhaust to vent into the attic. See where it says outside air, picture three 4" flex tubes feeding that air, directly from the HVAC vent inside the grow room. So all the air cooling my AC unit and my cool tubes is coming from outside the room, sucking it through the homes central air duct. I did a little scribbling to better illustrate how i have things routed.

hvac.jpg

I have the CO2 meter about 3' off the ground, right where the bottom of the plants are. No way it should go from 2000 to 1100 in less than an hour. It'll be down to ambient, 550 in way less than 2 hours. I hear some guys say their CO2 stays for half a day. How the heck they do that?

Ok,.. i gassed the room up to 3071ppm just now, and turned off everything HVAC related. No AC running, turned off the lights and fans in the cool tube, just left the LED's and CFL's on. Also turned off the homes AC. It's so fucking quiet in there its creepy, lol
Lets see how fast it goes down now.

diyer, i know you and i can butt heads but when you only have so many options you cant just shut the ideas down. so you have what seems is a basic understanding of a window ac, but have you ever really torn one apart? there is always loss of enviroment with that type of ac. the only ac with no enviromental loss is a minisplit.
and i will say that i was also very sure about my light ducting being sealed when i noticed my co2 dropping, turned out i had a spot that had a bad seal but it took me a while to find it.
try the no ac test and then try it with just the light cooling system running. see if it narrows ir down.

Originally Posted by highboo

simple. get a spray bottle and load it up with carbonated water. you know? the water that has the bubbles like soda? well yea just fill up a spray bottle with that and spray the plant. BUT BE WARNED. If you spray water while in the flowering stage. YOU WILL GET MOLD

what the fuck lol