am i right(growbox ventilation)

hi all.ok heres gonna be my first grow in a small enaugh chest of draws,and im going do go LST.but i am confused now:D
i gonna use 2 pz fans ,but ist the exstractor fan the one what have to be on the top pr was it the fan whats blowing the air in..i had a long night yday and my head is not workimng at al..i just wanna get it finished today cos im geting my 2 1,5 inch babys tmra.so plz help if yous could..


tnx

Use piping to route the exhaust from the very top out through the bottom. Put 2 90° bends along the way & paint the piping flat black inside to prevent light leakage. Use a wire & socket from an old computer so you can unplug it quickly. Don't put a lizard in there, and put an ankle in it.