your carbon filter light set up

how do you set up your carbon filter fan combo with your cool hood?
should i go?

filter>fan>duct>hood>duct>exhaust

hood>duct>filter>fan>duct>exhaust

or another way?
&
would fan 1 be way more quiet than fan 2

fan 1 http://www.amazon.com/gp/product/B0...rue&ref_=ox_sc_sfl_title_2&smid=ATVPDKIKX0DER

fan 2 http://www.amazon.com/gp/product/B0...rue&ref_=ox_sc_act_title_1&smid=ATVPDKIKX0DER


this is the tent http://www.amazon.com/gp/product/B0...rue&ref_=ox_sc_act_title_3&smid=ATVPDKIKX0DER

I have my fan pulling to the outside. Inside my tent it goes. Carbon filter....duct...600...duct..fan...duct to the outside. I wasnt sure of the pressure aspect but i was into huge negative pressure even with all flaps and ports open.
depending on your grow depends on the # of fans.
but i am also in a tent and dont want the heavy fan on the supports, so it hangs outside the tent