CO2 help please

I canâ??t seem to find this answer anywhere. Here is the story/question. If you had what you believed to be a sealed room, and in this room you have a co2 tank with a regulator, hooked up to a ppm3 by cap or fuzzy logic or what have you, and letâ??s just say for arguments sake even though no two rooms are the same. If you had 9 plants in flower in a 6 by 10 room, if you hit 1500 ppms and the unit shuts off how fast would the ppms start to drop or lower in the room? I ask for any round about numbers to get an idea why they are dropping so drastically as soon as the unit clicks off. Itâ??s as if it is on and off way more times than it should be. Also I am really cranking it to get the levels up. The flow meter is at 20 or more. Can someone please help me out so I can get an idea because maybe there is a leak, maybe this is normal, maybe anything. Brand new with the c02 world and would appreciate any help. Thank you in advanced.

How are you cooling your lights/room?

lot of things can affect that. where is your sensor? co2 is heavy and will drop to hover over the floor if there is no air movement. are you sure its sealed? that can be very misleading unless you pressure test the room. you could try to smoke test it to find leaks. if its sealed and you put a lit cigarette or incense the smoke should rise straight up and spread out at the top if there is air moving out the smoke will move that way. it isnt a perfect way but it works most of the time. the other way is sit outside with a cig and see if there are any leaks strong enough to move the smoke. it doesnt take much tho. air under pressure will take the path of least resistance or if at all possible make one just like fluids. air just has a harder time making one at lower pressure.

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Originally Posted by growtoshow

I can’t seem to find this answer anywhere. Thank you in advanced.

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Why is your differential set to???

My guess would be that air/gas is escaping faster than it should = not a completely sealed room...

I run a 10x10 with co2 ppms @ 1000.... The valve will run for about 10-20sec then be off for about 20-30min and run again for another 10-20sec... My room isn't completely sealed either but it is about 97% sealed... I also use an oscillating fan to move air upward - my co2 hose leaches out right in front of the fan...


CGI::::::