So does this eliminate the air flow noise almost completely. If you slept 10 yards from your grow space would you hear a noticable huming? Just trying to get a more accurate idea of how noisy it is. From the space i'm judging that's a 100mm fan, right? Also why do you have the intake fan (pc fan) at the top of the room and not on the plants (plant stems), what benefit does it serve in the top part of the grow box? One last question, you said the air is taken in through the carbon filter, would that be in the left side, so there's a hole in both ends of the tube?