Exhaust Ducting

for that much area Id consider using 600s on the one wall seems like theres enough space. not much more and you can turn them down during peak hours if necessary

guy at the grow shop said it takes about 200-250cfm per (1000watt) light
also that these fans always have to be pulling air. I heard that before as well

as in they need to be at the end of the chain not at the beginning.. unless yotu are gonna put the end int a y and have a 10or 12 or 8 exhaust

This is a mother room, so 600 is fine, but a bit much for what we need, since we are not looking to have them grow HUGE and FAST.

Also, pushing air is the most efficient method, and puts less stress on the exhaust fan, so it will actually work longer,,, although pushing is not necessarily the easiest way, hence not the preferred method for a small tent or closet grow cause you have Filters to deal with. Mine will be sealed and we will not be flowering in this location, so Carbon filters are not really needed.