Grow room with no fresh air

[one million]

Can I build a closed system with an air conditioner and co2 injection system and line the walls/floor/ceiling with panda. Do I need fresh air from the outside? If I can control the temp and co2.

 

[rkm]

Fresh air for any living thing is a good thing.

 

[MajoR_TokE]

It doesn't necessarily have to be from outside... but you do have to exchange the air in your room with new air.

 

[bubblerking]

Can I build a closed system with an air conditioner and co2 injection system and line the walls/floor/ceiling with panda. Do I need fresh air from the outside? If I can control the temp and co2.

you can and this is how my room is set up with no fresh air at all im yeilding 2 pounds every 60 days of of one 1000 watter