bongsmiliei have a closet 2'x6'x8' and i want to make a 3 chamber system. 2x4 for flowering. i'm planning on using a 400w hps (sealed and cooled by air from/to another room). how big should my inline fan for this be? it will be a soil grow. i will have a 2'x2' space for veg. with a ? 200w? mh(...