Hey,
during lights off and when I'm not home, I have deciced to keep carbon filter running from inside tent and just run some tubing from outside in to take in fresh air. I tested this earlier. When tent is closed up it pulls in air from outside adequately. It means I only need one fan ( on carbon filter) running. It should suffice enough to prevent stagnant air and high humidity. How does this sound? And I will run it on a power strip, I have a spare one somewhere.
cheers