(Sun System Magnum XXXL 6" Air Cooled Reflector) How much CFM do I need to pull through just the hood to keep temps nice? I don't even know where to begin... really is an expensive hood but, great reviews?! -Oh I am running a 400w MH(Veg) & 600w HPS(Flower) with the hood. Basically, I will be venting the light hood a part from the actual grow chamber, I want a "quiet as possible" but, still cool the hood effectively. 170CFM? 100CFM? I have never worked with an inline or duct fan so, I am playing as I go. Once I have my light setup figured out I can fine tune my carbon exhaust and I will be ready to begin germ. Someone please point me in the right direction I am all over HTG and Greners So many options... Anyone recommend a inline fan or any fan that can vent this hood real nice...