looking into either a 150/250W HPS light system but was wondering about cooling. My area is about 2.5w-20"D-35"H and currently running CFL. How big CFM fan/blower would you think i would need to pull through my carbon scrubber and yet keep the area cool? Also though about hooking the blower up to a vented hood and then the scrubber on the outside of the box.. what do you all think?
I just have a standard 6 inch fan blowing through the plants and onto the bulb/hood. Temps stay at around 75-80 and the light is able to stay about 6 inches from the plants. -C
You are looking at 12.5 cubic feet of space. To make sure you have enough power to blow air through the filter you need to go a little overkill. A 6" axial fan sucking air from inside your grow space, through the air cooled hood and then out of your space and through your filter should be plenty for a 250 if your ambient air is not too hot.