I'm just gonna go with 2 6" vortex fans, one for intake and exhaust.
Well it's gonna take longer before i grow now.

I'll also go with a carbon filter, due to that many emphasize it.

Another thing is there anyway i could make rooms "airtight"
?

So no odor leaks out an such, i need to buy better doors
i know this but i might aswell take as many precautions as i can eh?

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“True heroism consists in being superior to the ills of life, in whatever shape they may challenge us to combat.” - Napoleon Bonaparte