Thanks everyone, I'm pushing the used air outside and the fresh air comes from the room next to my grow room since it gets pretty cold outside.

I hope I will not create a negative air flow ... I'll be careful.

L8R
9KtuFK Reviewed by 9KtuFK on . Fresh air from within my house or from outside ? Does anyone know if itâ??s necessary to get fresh air from outside for the grow room or can I just get it from another room inside the house? Thanks Rating: 5