wg, i am not sure if you mean 'when i enter the grow room then the air is sucked through unlocked door into the growroom'
if so then you got negative pressure which is good and i back lyryc on this one.
here is a good post about pressure:
https://www.icmag.com/ic/showpost.php?p=2165257&postcount=9
^ the whole thread is worth a read in fact, but it is quite technical.
answers your concerns about dead air zones too
yeah, no pics so it doesn't count!
if so then you got negative pressure which is good and i back lyryc on this one.
here is a good post about pressure:
https://www.icmag.com/ic/showpost.php?p=2165257&postcount=9
^ the whole thread is worth a read in fact, but it is quite technical.
answers your concerns about dead air zones too
yeah, no pics so it doesn't count!