I've grown in a tent a few times,and everytime i had a problem,i could always come here,and get good advice,so thanks for all the advice guys.So once again it's on..lol....This time i'm not growing in a tent,i'm using a room that's 10x10.I know how to exhaust the light,i'm exhausting odor out of the room,with a scrubber,i have a a/c and fans,for air cirulation...I've been reading about,exchanging the air in the room,every 2 to 3 minutes,and i'm confused about that.....What do i need and,How do i achieve this with that size room...sorry for the long post..I'm a newbie,and when you don't know,you don't know...Thanks in advance for the advice..1luv