Hard to say, without knowing more about your space. You say you have a fan - what kind? Oscillating or an exhaust fan? Personally, with the new HPS lights, I would go for a couple of inline exhaust fans to help control the heat they put off.anyways what should i get next a humidifier?? and air system?? i also baught a big ass 30 gallon air pump i replaced just for shits n giggles i will post pics today