The Grow Awards 2026 🏆 
Airdome
Similar Grow Questions
Solved
TheGourmetWeed
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?Week 3
Setup. Ventilation
6y ago
5
3
Solved
ChopperMcOG
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 downSetup. Ventilation
6y ago
1
2
Solved
Bananito
How to Lower HumidityThe 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 thenWeek 25
Setup. Ventilation
6y ago
3
4
Solved
Nurse
temperature and humidity for auto from RQSWhat do you think about the temperature and humidity that are highlighted in the photo for each week?Other. General questions
Setup. Ventilation
5y ago
1
2
Solved
masdefs33
Tried mini dehumid. still issues with portable ac (added @ 9pm 6/2) see pic for graphAvg RH was 45%,had spikes @ 80% RH in dark, added portable ac to my tent. It raised avg. RH not lowered. Intake @ 40% RH that runs on a humidity cont. set @45%Now Day RH ~52%, Night RH ~60%.Ac starts RH spikes to 70% in dark. WTF am I doing wrong. Id hate to lose it to mold.Other. General questions
Setup. Ventilation
3y ago
5
Solved
SmylinPupil
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
6y ago
2
6
Solved
high_on_bridge
Can I exhaust my grow tent into the closet it's in?I'm putting a 3x3 grow tent into a larger closet I have (maybe 8' x 4')? So I guess the closet is called the lung room? I will have a carbon filter and inline fan in the grow tent exhausting out. Can I exhaust out into the closet it's in? Or is that a no-no? Pros and Cons?Setup. Ventilation
4y ago
4
Solved
hweixd
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
2y ago
1
2
Solved
Lordcrow
I am facing a temperature problem again....My tent reaches 84.2F, which is too hot in my opinion. But my humidity is perfect. On the other hand, if I activate the ventilation, the temperature of the tent reaches 76F, which is perfect, but the humidity level drops dramatically to 35%.
1- Keep Humidity
or
2-Keep TempWeek 1
Setup. Ventilation
3y ago
4
5
Solved
Percy
Can you grow in a 60x60x90cm budbox tent 600d mylar have a 600watt dimmable led plus 4inch fan and carbon filter
One. Will all this fit plus my pkant using SCROG Techniques.
Two. Is PHLIZON 600W DIMMABLE a good selectionnfor led lighting
Please help...Setup. Strain - Autoflowering
Setup. Lighting
Setup. Ventilation
5y ago
3
4
Solved
IrishAutogrow
NEGATIVE / POSITIVE pressureHi 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!Week 1
Setup. Ventilation
6y ago
2
2