Negative pressure from airflow?

DrGreenThumb

Well-Known Member
Hi!

Thanks for taking the time to look at this thread.
I have a question for any boffins or experienced growers out there.
Does the fan blowing air into my grow area ( a large wardrobe) have to match the fan that is exhausting the hot air? I heard that the CFM of each fan has to be equal or you get negative pressure in the grow room.
Is this true?
can anyone shed any light on this matter?
Cheers :bigjoint:
 
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