400 watt HPS...3x3x6 flower room

hello fellow stoners!!

I have my 400 watt HPS set up for my flower room. Ive been running it for 8 days and the temps range from 79-98...I have a fan running and a humidifier to keep it between 30-45% humidity....

so here is my question...

I have a 4 inch duct running into my flower room from my un-insulated garage.....I want to put a fan in the duct...BUT...do I want to bring COLD air in...to cool it down??? or take the HOT air out...to cool it down....thanks for any and ALL advice!

Hey izzo, A good room has both in and out venting. You would want to get fresh air in the room and the stale air out. Just my 2cents

thanks...Im sure that would be IDEAL..but I would rather not put another hole in the wall...any ideas?

Well then i might suggest if you have a strong enough fan pulling the air out