Setting up a CO2 grow room.

xox said:

could do what i did, i just did one open room. i keep a small tent/area outside the sealed room just for clones / bonsai mothers. my room isnt as big though. i have a 2ton mini split a/c, 105 pints total for dehus, and i have a natural gas co2 generator. same brand as aaron above but mine is the smallest they manufacture its a 2 burner. the room itself is framed with 2x4's, r12 insulation, 6 mil poly, and mold resistant drywall, flat white paint, white epoxy floor, 30 amp flip box, 20 amp circuit for dehus, 15 amp circuit for fans and whatever. custom insulated doors and removable panels with rubber gasket all the way around theres also dampers on springs that allow you to run the room sealed or unsealed depending on the time of year as well as exhausting the whole room outside per light cycle. if you click through my grow journal not sure which page its on but i show everyone with photos how i built the room step by step maby that will be helpful to you goodluck with the build

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jcdws602 said:

I grow in a 12x7x8 shed that is completely sealed. Lights out the c02 raises to pretty high levels. For the most part it’s not a problem until late flower. I noticed negative effects from excessively high co2 levels late flower so I ended up adding a fan and filter to exhaust co2 when lights out. Definitely a must in my situation. I’m not sure how sealed your shed is but if it’s anything like mine you may want to consider that variable.

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nxsov180db said:

What sort of issues did you experience from the high co2 levels during the dark period in late bloom? How high was the co2?

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jcdws602 said:

Buds would sometimes foxtail more than usual and smell seemed to also be affected. I run 1200-1500ppm and when the lights would go out it would climb up to the 3000’s.

edit: I also forgot to add that flowers would also take longer to finish.

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