Quote Originally Posted by syde00
I think this might work to a degree... but keeping in mind that the tyvek material is meant to breath in one direction only - the only way gases will escape the jar is if the air pressure inside the jar increases as the chlorophyll breaks down. I;m not sure if it would or not... it should marginally, but I;m not sure if it would be enough to really make a difference.

But basically you need that air pressure increase to push the gas through the Tyvek, just because it 'can' pass through the Tyvek, doesn;t mean it 'will' If air pressure inside the jar is equal to the air pressure outside the jar and there is no way for fresh air to enter the container, then the gas will not be able to escape the jar. The outside air pressure will basically hold it in.
I'm confident when I say that the gas exchange does not work the way you describe. At least not when involving a glass jar and a room. Oddly enough though what you described mimics how high pressure weather systems work (kind of).

Tyvek does not need air pressure to push gas through anything. Your house is covered by insulation, brick, siding, mortar, wood frame etc etc.. more importantly your entire house is wrapped in a layer of.... TYVEK. Your house is not perfectly sealed nor is there 'forced' air pushing against it since it's beneath several layers of your houses exterior.

Gases will rise and fall based on their density; ie co2 is much more dense than oxygen and thus will actually settle on the bottom of a contained area rather than rise. Water vapor on the other hand rises.. and with water vapor chlorophyll will leave plant material also.

The differences in pressure have nothing to do with exchanging gas. If what you said were true then everyone who just simply took the lids off their jars for 30 minutes twice a day would be smoking some shitty non potent bud.

Pressure differences would actually most likely result in damaging the jar. Have you ever put a mason jar in a pot of hot/simmeringwater only to have the bottom glass part come apart from underneath it when you pull the jar out of the hot/simmering water? Contrary to what people might believe the reason the jar breaks is because you are introducing a difference in pressure. Inside the pot of water the pressure is equalized on the outside and the inside; allowing for the jar to remain safe. However when you pull it out of the water you create an instantaneous difference in pressure from the outside. The pressure in the jar is much greater from being heated and the pressure of ambient air is far less causing the glass to push itself out from the inside out. The breaking of the jar has nothing to do with temps.

Only trial and error will see but I am certain it does not work the way you claim.

Thanks though, appreciate the effort.

ps: I went through great effort to clean up my post to not seem derrogatory. If it seemed that way then I apologize. I am not talking down to you; I am just blunt and it often comes across to people that way.