Hello. Happy New Year. It has been awhile since I posted. I am about to purchase a 2'x2'x6' tent to upgrade my activities. I thought that I would also purchase a 6" fan for exhaust of hot air. Do I need to get an intake fan as well or will the negative pressure caused by the exhaust fan result in sufficient airflow in the tent?
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Buying a 2x2x6' tent. Do I need an intake fan as well as an exhaust fan?
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Originally posted by Pyrokill View PostI don't think you would need one. I have a 6" exhaust fan and if I close the vents it sucks the walls in. I would say your tent should be good alone.
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Howdy hairyman I don't use a exaust fan just for my same size tent as your getting or got. I do have a oscilating fan on the outside for air movement to the inside. I can fit 4 photos in there but i choose to put 2-3max. I've run 6 autos in 3gal pots but that's tight. I'm getting ready to drop a couple photo seeds shortly. I've got dry indoor air in winter here i tend to focus more on upping humidity in my situation. Good luck man.Smoke Ganja create Peace Respect Nature don't trash the Planet
Soil grower with coco/perlite mixed in
indoor/outdoor grower
1 36"x36"x66" tent- Viparspectra P2500
1 3x3x6 tent- used in late spring for seedlings both veggies & weed. I have 2 viparspectar 450r for that tent.
I use a t-5 & 54watt CFL for seedlings
Sometimes i use plastic sometimes i use fabric grow containers
Currently using fish/guano during veg growth & FF Grow Big 6-4-4 teens to bloom. Once i see pre-flower i switch to
Age Old Organics Bloom 5-10-5
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Originally posted by Orggrwr View PostAs long as your tent is breathable you should be good to go without an intake fan. In my 2×4 tent with vents closed the sides suck in so much they were crowding my plants so I made extra support poles out of metal conduit to hold the sides away from the canopy. Works great
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Originally posted by SoOrbudgal View PostHowdy hairyman I don't use a exaust fan just for my same size tent as your getting or got. I do have a oscilating fan on the outside for air movement to the inside. I can fit 4 photos in there but i choose to put 2-3max. I've run 6 autos in 3gal pots but that's tight. I'm getting ready to drop a couple photo seeds shortly. I've got dry indoor air in winter here i tend to focus more on upping humidity in my situation. Good luck man.
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Happy New Year hairyman
In regards to your question, for a 2 x 2 x 6 sized tent, you can even get away with a 4in inline fan. You'll have to run it at a higher speed then you would need to run a 6in, but once it gets going, the negative air pressure will suck in fresh air through zippers, through vent holes, through those vent holes at the bottom of the tents, anywhere it can sneak in. I use a 6in for a 2 x 4 and a 4in for a 2 x 3 tent and they work perfectly.....a bit too well ....I broke some leaves when the fans were running higher. Might need those high CFM bars.
Make sure the duct is in the top most home since heat rises, it will be the best place to suck up all the heat you don't need while the bottom brings in fresh air and you should be good to go.Peace. Love. Mushrooms and Weed.
☮️❤️🍄🍁🪱
Current grows:🪴
Pineapple Express (Barney's Farm)
MAC1 (Blimburn)
Sweet Zombie (Blimburn) *autoflower
Acapulco Gold (B/W Label NASC) *autoflower
X -🪱Vermihut worm bin
T- 🫖Black Tea Kombucha (Fermentaholics SCOBY)
🍄Tidal wave 3x
🍄Treasure Coast 2x(1 was contaminated)
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If it were me I'd put a 4" exhaust fan inside the tent. For that size tent you prolly won't need a 6" fan. I use a 4" AC Infinity fan in my 3x3x6 tent. The fan speed isn't excessive, I tend to keep it BTWN 4 and 7 on a scale of 1-10 for fan speed. The last grow the fan speed stayed around 5, again, not excessive. You want to exchange/exhaust the air inside your tent to help manage heat and because cannabis likes fresh breezy/moving air, right?Auto/Photo Tent: Gorilla 2x4x7'11", HLG 350R, Infinity 4" w/Carbon Filter, Autopot system, Coco 50/50 perlite: Ace Seeds fem photo Purple Haze x Malawi x 2 Seeds dropped 2-2-24
Photo Tent: Gorilla 4x4x7'11" HLG Scorpion R, Infinity 6” w/Carbon Filter, Coco 50/50 perlite, Autopot system: 100% Sativa Ace Seeds Malawi x 4
Nutrients: CX Horticulture - full line for both tents
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IMO, you want to size the exhaust fan to the size tent you have. Generally, the rule of thumb is you want 1 - 3 air exchanges per minute. Your tent is 2 x 2 x 6 which means you have 24 cu/ft of air to exchange out of the tent, at minimum, every minute. If you go with the minimum then you want a fan that will move 24 cu/ft per minute. 24 x 3 = 72 cu/ft.
Of course this also depends on how much heat your equipment puts into the tent so you may want more exchanges but that is the general rule. An AC infinity T6 fan is rated at 406 cu/ft/min. T4 will put out 205 cu/ft/min. Even a T4 is a bit of overkill but will be fine. T6 is definitely overkill but will still work. I have a 5 x 5 and I use a T6 so you have a reference.
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Originally posted by No3odiesShad0w View PostHappy New Year hairyman
In regards to your question, for a 2 x 2 x 6 sized tent, you can even get away with a 4in inline fan. You'll have to run it at a higher speed then you would need to run a 6in, but once it gets going, the negative air pressure will suck in fresh air through zippers, through vent holes, through those vent holes at the bottom of the tents, anywhere it can sneak in. I use a 6in for a 2 x 4 and a 4in for a 2 x 3 tent and they work perfectly.....a bit too well ....I broke some leaves when the fans were running higher. Might need those high CFM bars.
Make sure the duct is in the top most home since heat rises, it will be the best place to suck up all the heat you don't need while the bottom brings in fresh air and you should be good to go.
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