When you say fan, what kind of fan are you talking about? A regular fan or a duct or inline fan that draws the hot air out?
Weedhound Reviewed by Weedhound on . First Grow....First Problem....PLEASE HELP!! I just recently turned on my 400w MH (AgroSun). I hit high temps...like 90-94 and I am freaking out. I have a fan that should be bigger than what I need for the size of my room. Let me break it down first. My entire grow room is 3x7x7. I have two seperate rooms. The veg/mother room is 2x3x7 and the flowering room is 3x3x7. I am using CFL's in the veg/mother and the MH in flowering. I haven't started flowering yet...just getting the plants use to MH before flowering around christmas. Rating: 5