- Mar 30, 2011
- Reaction score
so i got my 400w mh cool tube rite now with a 250 cfm fan pulling air off of it from the other side of the wall. should i have ducting on the other side of the cool tube leading out the grow room so it pulls fresh air across the light or should i let it pull the air out of the closet itself? if you look at the pic you can see what i mean.