Yeah I added my 400watt hps yesterday to my cab and my temps are at about 90 when the light is on and 74 in the dark. I moved the ballast to outside of the box and it didn't seem to help that much. I'm getting a new exhaust fan tomorrow so that should help alot...at least I hope.
Mnoutdoorz Reviewed by Mnoutdoorz on . Temperature/Cabinet Concerns :) The cabinet is 3x3x5 or 45 cubic feet. The lamp is a 430 hps with cool vents. I have a 240 cfm fan hooked up to the lamp. I also have two 80 cfm to vent out the cab. I have passive intakes for both the lamp vent in and the cabinet vent in(one each). The duct work comes out of the passive intakes and connects to a "y" which then goes to a single duct tube which then goes to the outside to draw the air into the box. Even though it is a nice 65-70 degrees outside the temps in the box are Rating: 5