Even if you had the lights 10 feet above the box, shining into it, it will get hot. Think of a greenhouse outside- sun is millions of miles away. If you mount the fan deep in the box, it will be much quieter. I have a bunch of PC type fans, for several set ups, all mounted inside, blowing into 12"-24" long flexible ducts, through wall, etc- you can't hear anything unless you're right next to the outlet. Most of the noise is from vibration, not the airflow. Hanging the fan with o-rings/ HD rubberbands or such will help too.:jointsmile:
roundeye420 Reviewed by roundeye420 on . does glass stop heat at all? I need to make a stealthy grow box for the basement and im using a 400hp, so how can i ventilate this guy quietly to keep heat out. I know your gonna say small computer fan or whatever but if the top of the box is made of clear glass will that block any heat at all from getting in? i know tinted windows can keep heat out but is clear glass absolutely useless for keeping heat away or what? if so are there any other ways i can keep my grow box cool without alot of noise? thanks alot guys Rating: 5