I have a 4' ft Tall- 5' ft Wide-2' ft Deep grow box that I am using for vegging. I have a Sun System 400 Watt MH Sun Master Warm Deluxe Bulb w/ Econo Grow remote ballast (outside grow room) and Sun System Econo Cool Reflector. I don't know if I am placing the Digital Temp Control too close to the light or what but I am getting a temp readout of about 90'F and humidity of 30%. I have a small fan from wal-mart inside the box one outside the boxremoving air from a vent. I dont have a permanent vent system in place because I wanted to see how the little fans would do and I think it may be too hot. I think I read that temps can be as high as 95'F but humidity and CO2 must be in check. What is the ideal humidity? I want to try and get my temp down to 85'F so I am assuming I need to run ducting from one side of my box through the lamps reflector, which has duct connections, out to the other side using one fan on each side of the box. It seems that those CPU fans may not be strong enough can someone who is using CPU fans give me some advice? I may need to buy a high powered fan at the hydro store but there expensive and would rather not. Any advice would help. *********Any posts made by me are purely fictional in nature and by no means is anything I say to be taken seriously. I do not grow or condone the growing of anything not legal. Any and all pictures I post are pictures widley available on the internet and any discussions I am involved in are purely hypothetical or are commentary in nature and should not constitute advice or be considered advice to assist in activities that are deemed illegal.