OK now THAT makes sense. Assholes that call people names because they "Know" something but don't know fucking why are are . . well . . . assholes. A la Matias the dick. His silly ass is repeating shit he hears but he doesn't know why. At least I can hypothesize intelligently and with experience while he simply runs off at the mouth. His parents had an idiot for a son.Hotrod , first off Nice Knuck if you are the caretaker of that Iron ,Much respect, Anyhow Yes it dose ,but the problem is the sq inches of the hood its self and shape , what will happen is when the air enters the hood the air hits the rectangle shape and unequal size and will roll inside and there for the venturi effect will be dimminished. Air easly takes on a roll effect when pushed through sq or rectangle shapes, air moves much more uniformed through round as it naturaly spirals .when you put air through the round the hit a odd shape as rectangle it will alway act almost like the ocean tide beating against the shorline .
really thing to do is go to a HVAC forum with a venting question , Its like taking your car to the ZOO to get fixed when you ask a venting question here, I get caught up on these questions by the replys I read and feel sorry for the person getting such bad answers. when Im here to learn how to grow , not teach HVAC. I need to stick to my reason for being here.
this is my current setup for both my tents. 440cfm fan (outside tent)--duct--tent--duct--hood (air flow over socket then bulb)--duct--tent--duct. fan is sucking in cool basement air. this setup will be the same for my veg tent and my flower tent. for the scrubber the fan will be inside the tent (440cfm fan--duct--tent--duct--massive carbon scrubber (6" inlet 8"x24" w/125oz of activated charcoal inside).
IF the temps dont seem to be under controll, ill switch the fan around and try pulling the air vs pushing the air. however, with a 440cfm fan for a/c hood cooling, i doubt heat will going to be an issue at all. the fans (hood fans only not the scrubber fan) will aslo be on a digital temperature controlled on/off switch.
im hoping for a newb grower i have that correctly routed. after ALOT of reading and asking questions it seems either way (push or pull) will work.
hotrodharley, your right that yes you will allow your fan to last longer if you pushing the air, im just concerned about how much cfm will be pushed out the other end ?
I mean you saying it does work i believe that but what is the airflow like ? Would you suggest another fan at the end of the duct to ensure optimal flow rates ?