co2, exhaust?

[dululsch]

hey guys i have a 2.5 x 2.5 x 5.5 grow closet and im thinking of getting a c02 tank. Does this mean i dont need any fresh air coming in? and do i need to have a way for the air to get out? there is an adjacent 20 ft closet.........

 

[Mutt]

No CO2 cannot be stand alone without oxygen.
I never set up a CO2 kit. but I know PPM's of that have to be monitored and oxygen is a must.

 

[Ekoostik_Hookah]

what if just your grow room doesnt have oxygen, and it has just c02.
and your bedroom has fresh air, and oxygen.

then does your room need oxygen?? cuz dont plants just breath co2, and produce oxygen.....then there would be oxygen in the grow room.