I'm looking into starting a grow tent 5x5x7 with a 800 draw led light. I was wondering if I have the tent in my room do you think having a passive air intake and negative pressure in the tent, will be able to keep the Co2 ppm high enough to add any benefits? Or will it not be nessicary and I should think about a 4l bottle with sugar and yeast to make enough Co2 to make a diffrence. Just looking into it, any advice will do.