not for a 400watt hps it wont. you need more vents or an air cooled reflector.
pudder Reviewed by pudder on . Building a Grow Box I am building a grow box an I have a few questions I plan on making the box 4(wide)x4(deep)x4(tall) I am using a 400watt HPS as high in the box as I can mount it so my question is if I mount a 4inch computer fan at the bottom of the box for intake, and a 4 inch computer fan towards the top of the box for outake is that enough ventilation to keep my plants cool? and also on my outtake i want to have tube ducts..or whatever there called those silver tubes.... about 8 feet of tubing Rating: 5