Just make sure you have Co2 running in your room before you let it go like that.. If your not supplementing Co2 you NEED fresh air! Its a system.. they are both dependent on each other in order to work properly!! Good Luck!!!
Quote Originally Posted by drew225
Ive got my my exhaust system sealed now just like you've described. Now that I have the intake duct taking in cooler air it ran for the last 2 nights without me having to use the portable ac unit.