Listen jackass, I don't need you or an HVAC guy to explain a 7th grade concept of air exchange.
But maybe I'm wrong seeing as how I'm obviously sitting in a house with 1440cfm of negative pressure so I must be suffering from O2 deficiency, but things sure do seem to work just fine.
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Damn, I forgot about the 6" 440cfm on the veg tent.
Nothing says home like the vacuum of Space...
Why not hit up
@Renfro and ask how much negative pressure his basement has...
Edit....yes, I do vent outside btw...and its pretty obvious that you sir are are in fact the one who doesn't understand considering you're having a "theoretical disagreement" about something not working with someone who is actually running the setup.