The Grow Awards 2026 🏆 
Extractor fan!!!!
Funkygrowerstarted grow question 4y ago
What size extractor fan should I buy for my tent. Someone said a 6inch will do for my tent?
Solved
Setup. Ventilation
likes
Skinnytalls420answered grow question 4y ago
Yes bro I use 6inch that should be perfect for u. I’ll message u with link to one I got!!!
Similar Grow Questions
Solved
ForTheMeds
Airflow for seedlingsShould i have both fans on in this stage?Setup. Ventilation
5y ago
1
1
Solved
rosemary420
How long should I leave my air pump on?The plant is 4 days old.Setup. Ventilation
4y ago
1
2
Solved
RedArmC3PO
Carbon filter sleeve needed?I use the carbon filter on the exhaust side. On the intake side, I have a dust screen mesh.
The tent is quite clean so that’s why I don’t see the need of the pre filter. Would also probably load the inline fan a bit too.
What’s you thought?Setup. Ventilation
2y ago
5
3
Solved
rimzytfa
Humidity problemsCan I have some advices on how to lower my humidity? I’m having some troubles lowering it since my plant is now flowering. Usually I can’t lower it from 60% while my temps are always on 27/28 C during lights on.
I will leave a pic of my setup here. Should I change something?Setup. Ventilation
4y ago
1
6
Solved
Harukisan
Can I close the door of my closet?My tent is located in a closet kind of room (5x2 meters) and I was wondering if could close the door during the night because the fan is a bit noisy. Will it fill the room with exhaust air/humidity and damage everything inside (the plant, also the clothes that are in the room)?Week 5
Setup. Ventilation
5y ago
2
4
Solved
RGGROW
Maintaining VPDI've got my photoperiod doing well in a 2x2 tent. I'm trying to regulate my VPD with what I have on hand. Currently I'm running my exhaust fan for 8 minutes every hour to get an average VPD around 1, but I'm concerned about the swings. Am I micromanaging?Setup. Ventilation
Setup. Other
1y ago
1
Solved
Keep_er_lit
How to keep tent warm?Hello....first time grower and plants seem to be happy.
Recently installed an online fan and filter but losing a lot of heat..
How do I keep a steady temperature?
Have tube heater inside tent ...but makes little difference..
Thankyou for any helpSetup. Ventilation
4y ago
1
1
Solved
BullWeedDog
Que tiempo tengo que dejar mi ventilar encendido??Puedo utilizar el ventilador de mi cultivo solo cuando este encendida la bombilla?? es decir colocar que se prenda y se apague junto con la bombilla en el mismo ciclo o siempre debe estar encendido??Other. General questions
Setup. Lighting
Setup. Ventilation
4y ago
1
1
Solved
BostonGirlGrows
Ventilation set upI just got my first grow tent- a Vivosun 32x32x64 and a Vivosun 4” fan and carbon filter combo. It came with directions for the tent- but nothing on the ventilation system. What’s best as far as set up? Any tips, recommendations, or photos.? Does it need to vent outside?Setup. Ventilation
6y ago
3
Solved
creamer
RH question! Huge veg phase plantsAir humidity increases during night time (up to 90%). I have placed carbon filter below the plants.
Question actually is do I need to be too worried if I can get the RH level better within next couple days? It’s first week of 12/12 switch now. :)5y ago
3
2
Solved
Newbiegrower420
Dehumidifier Recommendations please?Quick question? What do you all use for dehumidification? I’m running a 300w LED in a 3x3x2 ft tent with 4 girls in 3 gallon pots 4” fan with carbon filter. I need to lower humidity levels between a range of 10-20% what kind of dehumidifier would you all recommend? Cheap as poss!Setup. Ventilation
5y ago
3
3
Solved
TeeAychCee
Best way to cool your tent/ growbox?So I’ve built a custom growbox using an IKEA wardrobe, air vent for intake, two circulating fans, carbon extractor exhaust, and a 600W LED grow light. Temps average at 29 degree Celsius with the lights on full, is this too high? Best way to bring the temps down? Many thanks!Setup. Ventilation
4y ago
2
2
Solved
GreenCosmos
(MarsHydro) Anyone have experience with this combo?I'm thinking about upgrading my ultra cheap duct fan and carbon filter to this beauty.
It has a thermostat controller and is under 250€.
It seems to good to be true for this price.
Is anyone using it and give me a review?Setup. Ventilation
2y ago
8
6
Solved
AlienScrOG
co2co2 ... how long does a 1 kg cylinder last 5 square meters of external surface of the box approximately 10-15 cubic meters around the box outside the box box measures 50 cm x 120 x 190 high now you can do itSetup. Lighting
Setup. Ventilation
Feeding. Other
4y ago
4
4
Solved
TerpTurtle
climate controlAny tips on controlling humidity swings? im trying to balance out the intake & outtake, ive tried to turn off the system just have the dehumidifier run.. but am working harder than I feel like I should. just looking for some tips on keeping a consistent environment.Week 11
Setup. Ventilation
5y ago
3
2
Solved
buddhi_coop
Did I set up my carbon filter, air duct & exhaust fan right ? Did I put my air duct in the right spot/position?Setup. Clones
Setup. Lighting
Setup. Ventilation
5y ago
2
3