this is my first grow and I built 2 separate rooms, flower is 6x6x9 and veg is 5x6x9. im not too sure if I should go with an open hood or air cooled . its about that time here in colorado where the weather is getting pretty cold. i figured it would be smart to use the heat from the light for now.. but im not exactly sure how hot a 600w would get. so my question is which would be more efficient for the flower room?
Air cooled you don't have to hook it up if you need the heat but you have the option in case you you do. Come summer you'll be happy.
that's a great point.. i'll definitely go with the air cooled then.. thanks again for the quick response