I just started my first grow over the weekend when it occurred to me that the three rectangular passive air intakes at the bottom of my grow tent will most likely admit quite a bit of light when I get to the flowering stage. A grow room ventilation is a system that ensures a continuous flow of air between the outside world and the indoor grow area. The light pisses out and I can't think of a way to stop this without compromising the efficency of the intake... any help would be awesome cheers. Hi guys n gals, I'm running a 250w cfl in a box under my desk. It's actually best to keep a tent in a dark location for several reasons: 1.

is this rectangular hole sufficient for a passive intake? Hi all. Passive Intake vs Active Intake. There are two ways that you can bring air into your grow room, referred to as passive intake or active intake. This pulls in fresh air from the intake ports at the bottom of your tent. 4" Inline Fan - 100 CFM, Metal Duct Fan, ETL Listed, Pre-Wired 6 FT Grounded Cord - Great For Grow Tent Exhaust and Intake, Register Booster For 4 Inch Ducts 4.1 out of 5 stars 1,008 $18.99 $ 18 . If you are growing plants inside, you’re likely doing so with a grow tent to control the environment. air cooled hood. Ventilation is a two-part process: intake and exhaust. 1000 watts in a 6 x 4 x7.5 feet high grow space. An increasing negative pressure. Average Rating . The most common grow room systems use a combination of exhaust fans and ducts or pipes to maintain airflow. Most grow tents come with screened panels towards the bottom that can open up to allow fresh air into your tent. When you open the tent you don't have to worry about the light shining out. Comments for Proper Intake and Exhaust for a Grow Tent. So I bought the Vivosun 2x2’ but it doesn’t have an “inline” setup at the bottom, just two vent screens I keep open during my first veg. Either lower the speed on your fan, open up the passive air intake windows on the bottom of your tent more if possible, or consider installing an active air intake fan, which is the same as your other fan but on the bottom of your grow tent pushing air inwards. In case you are drawing air in just through vent holes or flaps, that might not be sufficient enough to cope up with the high exhaust rate. There are two ways that you can bring air into your grow room, referred to as passive intake or active intake. For the majority of grow tent growers, a passive intake system works perfectly. 99 For my passive intakes I've always just ran one length of ducting one size bigger than the extraction fan and temps and humidity are fine, plenty fresh air gets pulled in. (with Velcro covers to keep light out) good evening opengrowers, just wanted to know what size opening for a passive intake for a 6 inch 440 cfm inline exhaust. Usually, tents of up to 4×4 size don’t really require an active intake fan.


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