Chat

By continuing to use the website or clicking Accept you consent to our cookies and personal data policy. For details please see Privacy Policy

Accept

Recommended

Recommended

Grow QuestionsCirculation / Exhaust

Circulation / Exhaust

Smokin_Joestarted grow question 4 years ago

Getting ready to install carbon filter; found myself wondering if growers typically leave their filters/exhaust/fans on during dark periods? Up to this point, I've had everything on one power-strip/timer: circulation fan, exhaust fans, and lights. Should I keep anything on 24/7?

Solved

Setup. Ventilation

like

Ttrichomeanswered grow question 4 years ago

Most definitely need to run fans always. Humid stagnant air Is molds best friend. Cutting the fans off is inviting mould to germinate and take over. U always want air exchange and airflow in ur tent. Happy growing and stay lit fam.

1 like

Complain

Selected By The Grower

Mr_Weeds_Autosanswered grow question 4 years ago

Hey Growmie, Yes, they run all the time, it's a must to keep the humidity down when the lights are off and air circulating even during the dark periods. Hopefully, I answered your question and remember ..."Happy Growing" and "Free your mind one puff at a time"

1 like

Complain

Similar Grow Questions

Solved

How to Lower Humidity The weather outside was really wet and chilly for days here and the humidity is about 60% at this point. Without a duct fan, how can I lower the humidity in the tent? I'm using several small fans right now. I plan to get a duct fan when I can, but I need something until then

Setup. Ventilation

4 years ago

3

4

Solved

RH too low in indoor grow. Solutions?I'm having a issue with my grow - RH won't go above 20%. With a humidifier inside, full power. Temperatures are between 21 and 25c and I can only think the air extractor is taking too much air out of the grow, as in the night, with lights and fan off RH rise to +80%. Any ideas?

Setup. Ventilation

5 years ago

5

3

Solved

Fan vs Fanless LEDs How effective are heatsink LEDs? I'm not sure if I should go with fanless (like Mars Hydro SP150) or with a fan (Mars Pro II Epistar 120). I struggle with heat, when the tent is closed it gets to 29-30 degrees with humidifier in full swing (HID lights) and I want to close it soon

Setup. Lighting

Setup. Ventilation

5 years ago

3

3

Solved

EthosMultipassMemberRovairok

Good [email protected]What's a good dehumidifier for around 300 or so I can't tell what's shit or what's good? Tr hat all say the same shit

Other. Other

Setup. Ventilation

Setup. Other

5 years ago

1

Solved

Temps to high....i think Hi, newbie here, I'm really struggling to keep temps below 30°C. Outside temps are not helping all, i have my extractor on full, air circulation fan on full, both flaps open, shed door even open lol and my light is turned down to 250 watts, which probably isn't high enough!

Setup. Ventilation

5 years ago

3

Solved

Smelly room, with filter should I be able to smell flowering buds?I have a 3x3 grow tent with a 4” fan and filter. The filter is in the tent and exhausts into the room. I taped the filter to the line and line to the fan so no pinhole leaks. The fan is rated for 198 cfm. I have it on low because when it’s high the smell is worse.

Setup. Ventilation

5 years ago

2

6

Solved

What's a good dehumidifier for a small grow tent??What's a good dehumidifier? At the moment I'm only using those cheap little things but my humidity is staying at 60/65 and want it lower for flowering. My room ain't big 1.2m x1.2m

Setup. Ventilation

Setup. Other

5 years ago

2

Solved

Humidity 70%Guys, what do you think about this progress ? I tried to put humidity low but 70% is my best.. Any chances of future problems ?

Setup. Ventilation

5 years ago

2

1

Solved

So has anybody used these cordless mini dehumidifiers in their grow rooms? They’re small units that u charge over night every so often when the silica changes colour? My grow room is very small so an electric dehumidifier wouldn’t fit and I’m struggling to keep humidity down

Setup. Ventilation

4 years ago

1

2

Solved

Carbon filter / ideal size for my tent.Hi all need info regarding carbon filters. My tents height 200cm , width is 120cm. Have tried to work out but no look. I have 4 plants in it. I need advice on which size to go for. I have tried to calculate myself but no joy. I am advised to get 6" but not sure ?? Thank you

Setup. Ventilation

4 years ago

2

3

Solved

BooBoosHotBoxCornGrow

AC/humidifier So I did get a humidifier/AC. Super cheap, $40. It seems to work. I’ve gotten it at 79-82 degrees and 45-50% humidity. I just have to keep filling the water part up every couple hours but I work from home in my room where it’s in my closet

Setup. Ventilation

4 years ago

1

Solved

BooBoosHotBoxCornGrow

Temp tent issue Nice! Thanks guys for the quick help! I’m also kinda sort of having a temp issue, I’m trying to make it the best I can, I’m way down south and the temp reads 86-88 a lot. If I blast the fans and humidifier it does get down but I’m worried about the electric bill going up.

Setup. Ventilation

4 years ago

3

3

Solved

4” filter upgrade help! Smell Hey guys, I’m wondering what is a good recommended 4” filter for my tent? I got one that came with a fan, ducting and the filter off eBay but the filter is the shits. I had it vented in the room but the smell was brutal. It’s vented out the window under my deck, reeks there now.

Setup. Ventilation

4 years ago

1

4

Solved

EthosMultipassMemberRovairok

How to automate everything?? Help!!Okay what do I buy to regulate the temp on the ac there's no thermostat on the window one. Like what do I need to buy now to auto all this shit ?????? 10 amp 1200 watt 5000 btu lil guy

Other. Other

Setup. Ventilation

5 years ago

6

6

Solved

Ventilación ideal en 1x1 metro Necesito un sistema de ventilación acorde para una carpa de cultivo de 1x1 metro donde tengo un SCROG de 2 macetas de 25L . Que sistema de intracción, de extracción y filtro de carbono serian recomendables? Bajo ninguna circunstancia puedo permitir olor en el cultivo. Utilizo LED

Setup. Ventilation

5 years ago

2

3

Solved

6" Fan in 3x3 Tent I bought a 6" fan for a 3x3 Vivosun tent and I'm noticing a good mount of negative pressure even at the lowest setting. Do I need to get a 4" fan? There are some vents on bottom sides of the tent. Can I use those to lessen the pressure? Thanks!

Setup. Ventilation

5 years ago

3

Solved

Oscillating vs 2 non-isolating fans fan/CO2 filter Made a purchase for some clip on fans.. but they’ve arrived and are non-oscillatory. 😑😑😑 What do we think return them for oscillating fans or keep and just move them around/set them on a schedule.. 😫

Setup. Ventilation

5 years ago

2

2

Solved

High humidity The humidity hit 63% today in my tent for 4 hours while I wasn’t home I had the exhaust fan on full blast and 2 oscillating fans in the tent once I got home I turned my dehumidifier on it’s down to 45% now will it be ok or do I need to watch for bud rot?

Setup. Ventilation

5 years ago

3

2

Solved

Sam_The_Herborist

Best option to ventilate without a fan I use to grow my plant in a 60cm × 60cm I had a very low budget to start the cultivation and I plan to buy a fan asap Meanwhile I would know what is the best option to ventilate my plants ? Thanks for your responses :)

Setup. Ventilation

5 years ago

1

1

Solved

couple quick questions Do I need to close the flap to the vent during dark cycles? (Lights off during the day) and should I block lights coming from fan power, humidifier, dehumidifier, or indicator lights? Also do I need to use the carbon filter the whole time? should I ever have the exaust fan off?

Setup. Lighting

Setup. Ventilation

5 years ago

3

3