Ventilation help

Turned the back bedroom into a flower room and using the closet for a veg room. I was able to light seal the closet but this also made it air tight. Running t5's and it gets into the mid 80's. I put a 6 inch duct fan and am exhausting into the grow room (ceiling height). I cut a 5 inch hole in the wall (at the bottom) of the closet to the adjoining bedroom closet to passively bring in fresh air, its not enuf. room barely stays at 80, and with the closet door closed the exhaust is not blowing as strong as when the door is open Can i just cut another 5 inch hole or do i need an inlet fan? Please advise before I punch to many holes in my wall.

Smokey

Fan. Plus a fan inside the closet moving air at all times.

hotrodharley said:

Fan. Plus a fan inside the closet moving air at all times.

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I do have 2-6 inch clip fans running at all times. Another fan means more electrical on an already maxed out circuit. I will if i have to, and will move something to the other already maxed out circuit. lol

I prefer passive intakes to forced air but if you're not getting enough passive airflow through that 5 inch hole you can either cut more holes or use an intake fan to push more air.

xtsho said:

I prefer passive intakes to forced air but if you're not getting enough passive airflow through that 5 inch hole you can either cut more holes or use an intake fan to push more air.

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I prefer passive also, just don't know if two 5 inch holes will be enuf. I really don't need a whole bunch of holes in the wall.