I just started growing some free feminised seed i got in a pc grow box i keep in my closet(where i thought the air in my room would be the coolest), and despite the exhaust, intake, and a third fan just to move air around, the temp in the box is still around 90 degrees with the lights on. If anyone can give me any suggestions on how to get that number down that would be great.
or use a bigger room.. i have found that small rooms are hardest to cool because the bulb itself is 90 degrees.
Well ventilation is basically about air exchange cool air replaced with hot air. It could be your closet. Generally closets are very poor areas to grow in do to the lack of ventilation. Maybe a exhaust above the light?