Chat

By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms

Accept

Recommended

Back to Grow Questions

Size fan

Farmer99started grow question 5y ago

Hi guys who can tell me the size of the extractor for a 2x4 tent thanks

Open

Setup. Ventilation

likes

Answer

advice

Frigaultanswered grow question 5y ago

Always go bigger with a controler if yiu can afford it. This way its perfect at low setting if you have heat or humidity probleme you can always leave the bottom zipper aroun open and the negative presure will creat a good flow of fresh cooler air. If you upgrade the tent you also wont have to budget in another exaust to make ut work..

likes

Complain

TimTheTerpMananswered grow question 5y ago

Anything over a 4 inch in that size would be overkill and you would need a fan controller to slow it down or low humidity would become an issue at least for me. 🤘😤

likes

Complain

So_ill_420answered grow question 5y ago

190cfm would be more then enough.

likes

Complain

HeavyHittahanswered grow question 5y ago

A 4 inch would do if you just want it to extract some air and clear the smell. But to control humidity and heat a bit better I'd go for a 6inch .

1 like

Complain

Similar Grow Questions

Solved

UrbanPlannerGrower

Help Dropping Humidity Hi Bud.I have a zootly tent with two flap mesh vents at the bottom. I have a secret jardin exhaust fan and filter. I'm trying to get my tent at 50% r/h but cannot drop lower than 65% and I'm in early flower. I have one of the flap mesh vents opened for passive intake. Please help

Other. General questions

Setup. Lighting

Setup. Ventilation

3y ago

4

Solved

NEGATIVE / POSITIVE pressure Hi fellow growers.. I wont pretend to be a Pro nor an Amateur. Just willing to learn and progress.. 🙏😌 First question I have is one I've struggled with finding an answer too.. ......NEGATIVE / POSITIVE Pressure..... Which should I have? Why!

Setup. Ventilation

5y ago

2

2

Solved

Capa de Cultivo Inflada presión positiva puede generar esto un problema???Hola mi carpa de cultivo tiene ahora mismo lo que parece una precio positiva, es decir, le he colocado un Extractor Tubular VK con un Flujo de aire 365 (m3 / h) esta conectado a un filtro anti olor y un Intractor TT de dos velocidades 220-280 (m3 / h) utilizando 1 velocidad

Setup. Ventilation

4y ago

1

1

Solved

Currently using a 4x8 tent in a garage that is dusty. would getting a extra intake be better for my plants?Currently using a 200mm inline exhaust with a max cfm of 537,96 and using a intake with a max cfm of 194. currently using the exhaust on medium setting so 466 cfm. would it be better for my plants to get more air from outside with a new but small intake of about 128 cfm ?

Other. General questions

Setup. Ventilation

Setup. Other

2y ago

1

1

Solved

Tent Exhaust Location Is it okay to have the tent exhaust vent into the room the tent is in with an air-con in the room that vents to outside? 2x2 tent in a 6x6 bathroom, air-con sits outside the tent and vents out the widow, door has vent at bottom, is it fine to have tent exhaust into the room? Thx

Setup. Ventilation

4y ago

1

1

Solved

Humidity in a small tent How to preserve optimal humidity in a small tent? My target humidity is 70 as I am germinating. My tent is 60*60*160. The smallest vent is on the picture I have attached (310 m3/h, 180PA). I have a Xiaomi Humidifier running on the maximum 24h, but still no help

Setup. Ventilation

2y ago

12

9

Solved

Retailer saying I need a bigger fan 1st post here going to be starting a diary soon, went to buy a complete set up today 240x120x200 tent 2x600w light kits 6" fan rhyno hobby 6" filter & all the rest, but retailer now saying fan & filter in that package won't be sufficient & I need to upgrade to a 8"fan n filter?

Setup. Ventilation

5y ago

1

5

Solved

Problemas temperatura en mi cultivo 5ta semana de floración.mi cultivo va muy bien pero estas ultimas semana ha empezado el invierno y las temperaturas en el interior han cambiado siendo estas la mas baja en 12° y la mas alta en 22°, suele mantenerse a unos 20° y la temperatura del sustrato suele estar a unos 16°C, puede ser un problema?

Other. General questions

Other. Other

Setup. Ventilation

4y ago

2

1

Solved

Looking for some input.Looking for some input on inline fans n carbon filter for a 2x2x4 grow tent. Which ones to get/ stay away from? 6in or 4in? Much appreciated.

Setup. Ventilation

5y ago

3

3

Solved

How crucial is an exhaust fan and a carbon filter?I cant find anything in my country as a kit, but would buying them piece by piece work? Example something like in the photo connected to an air duct and then to a carbon filter? Or if the exhaust fan is not crucial? how can i get rid of the smell in a cheaper way?

Setup. Ventilation

1y ago

1

2

Solved

High RH in flower I find it really hard to keep the RH below 50%, especially at night when temps are low. I have a dehumidifier in the room where my tent is in but even when it's below 50% there, it still is above 50% in the tent itself. Can somebody explain this? Probably help me with a solution

Setup. Ventilation

3y ago

1

1

Solved

Extraction can size for 2x2x5 tent ?Hi guys I'm about to set up my first box, I'm missing just the extraction. Box is 2x2x5 and I've got led light 120w. No smell is the most important for me. Is 4" fan with carbon filter going to absorb all the smell? Many thanks !

Setup. Ventilation

5y ago

3

3

Solved

Hello m'y room is 100x100x200 cm If I put a 150m3/uur fan as in the photo is this sufficient as an air inlet? I have an adjustable 400m3/ur extractor with carbon filter in the room

Setup. Ventilation

2y ago

2

2

Solved

Maintaining VPD I'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

6mo ago

1

Solved

Co2 I just put co2 in my flower room should I turn off my exhaust fan and other fans in the room? I'm using a 20lbs bottle and reg,

Setup. Ventilation

5y ago

1

Solved

Growtent Humidity control How do you control humidity/temp when using a grow tent? is it enough to put a dehumidifier in the same room as the tent and close the tent and just blow the air outside with a fan and tubing? Do u need an intake fan too? Or does the "good air" gets sucked in enough without ? THX

Setup. Ventilation

4y ago

4

4

Solved

Degree problem I have a setup like this and I'm trying to find a solution for degree, i got alaskan thunder auto and it's stressed a little bit. I wanna make there cooler. What should i change or add ? There is 30 degree when light is open. when it's closed there is like 26-27 degree.

Setup. Ventilation

3y ago

2

3

Solved

RH 90% during Flowering!I have a problem with RH. I am at the 3rd week of Flowering and I'm struggling to keep my RH down. Today it was 90% when I opened the grow box. I have access only to a window. Is it better to suck air inside or blow the exhausted air out? I can't do both

Setup. Sensors

Setup. Ventilation

5y ago

2

3

Solved

How important is humidity?How important is it to keep humidity high in the early stages of growing? We are going in a tent and struggling to keep it above 45%

Setup. Ventilation

5y ago

3

4

Solved

Cant lower RH while flowering What if u cant lower humidity? Because the garagebox is rh 75%. And with the rain here it wont lower. If u cant take avantage of the RH. Is it definitly a problem? If i do -cannacure treatment -use milk/water solution if area's got infected -defoliation Or is It doomed to fai?

Buds. Other

Setup. Ventilation

4y ago

3

6