The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Wilting plants of low humidity ?
Lazuli
started grow question 5y ago
Does anyone ever had wilting plants because of too low humidity? Every winter my plants wil during night while its still 20 degrees celcius
Solved
Setup. Ventilation
likes
NobodysBuds
answered grow question 5y ago
need a humidifier or ignore it. with a furnace on you are likely around ~30% RH. could reduce temps a tad, but if near ~20C, that's not a good option for you. temp and humidty are related as far as what the plant will enjoy.
1 like
Complain
Selected By The Grower
Similar Grow Questions
Solved
Harukisan
Silent inline fan recommendation (Europe)
Hello growers, I am looking for a somewhat silent fan for my 2x2. AC Cloudline is not readily available in my area. I'd love some feedback on those : RAM Silent 125mm, S&P TD Silent 160/100 N, GENT ECco 100mm, TT Silent M 100, DALAP AP Quiet 100mm. Thanks a lot 👍
Setup. Ventilation
5y ago
1
1
Solved
BullWeedDog
Humedad dentro del cultivo
La humedad está llegando dentro de mi cultivo al 80% y hasta el 90%, he comprado un reductor de humedad que venden en el supermercado de estos que reducen la humedad y llevan unas piedras adentro. Esto le hará daño a las plantas??
Other. General questions
Other. Other
Setup. Ventilation
3y ago
1
3
Solved
Maskedcucumber
Humidity issues near flowering
So I installed an intraction (145 m3/h speed1) and aluminium foil on the pots but humidity is still hight like 75% when nightime and the lowest is 65%. Probably the water evaporates by the pots (drip, clay pebbles). I have no more ideas. Do I have to buy a deshumidifier? Thx !
Week 6
Setup. Ventilation
4y ago
3
3
Solved
MrBz21
How do I know my filter is still running ok? can it wear off in just a month?
I have a vulcan carbon filter for a tiny tent. It runs 24hrs a day for the last month. Now, the smell coming out of it is not neutral anymore (not strong cannabis), but it is a bit heavy and I'm getting paranoid. How do I know my filter still runs fine? High umidity is a factor?
Setup. Ventilation
4y ago
2
3
Solved
BullWeedDog
Como controlar renovación del aire en índoor
Como controlar la renovación del aire en índoor, cada cuánto debo apagar y encender los extractores e infractores del cultivo, puedo dejarlos apagados en las noches mientras la bombilla está apagada??
Other. General questions
Setup. Ventilation
Setup. Other
3y ago
3
3
Solved
Newbiegrower420
Slowing a two speed inline fan
Can I run a fan speed controller with a dual speed inline fan? My 4” two speed fan is slightly too powerful for my grow room. I’d like to slow the fan slightly but I have heard the these types of controllers don’t work with two speed fans? Any advice or what to buy to do the job?
Setup. Ventilation
5y ago
3
3
Solved
SmylinPupil
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
6y ago
1
4
Solved
az420
Trouble keeping my RH below 65% in grow tent (I water once per 24hrs, 20% runoff)
Hello fellow growers! I am having trouble keeping my RH lower than 65%. Any ideas (without using a dehumidifier)? For extraction, I have a RAM mixed flow with a passive intake. It seems for the space (0.8mx0.8m), that this is more than enough. Any help is appreciated. Thanks!
Week 4
Setup. Ventilation
Setup. Other
6y ago
4
4
Solved
TiRobotProds
Séchage
Bonjour a tous comment faites vous pour le séchage. Cela m'intéresse beaucoup merci pour vos réponses.
Setup. Ventilation
4y ago
1
Solved
WeedMannz
hi guys
hey, guys, sorry to bother you, but for a grow 40x40x120, this suction will work?https://www.amazon.it/dp/B07CYRF958/ref=cm_sw_r_wa_apa_i_p.cUEb7SZTBHC
Setup. Ventilation
6y ago
4
Solved
alhambra
Temperature Probe. Where to place it?
I use a Vivosun exhaust and control hub. It comes with the temperature and humidity probe. I am curious, based on experienced growers here, where do I place this probe? On the floor or do I let it hang mid-way in the the plant itself?
Setup. Ventilation
3y ago
4
Solved
Spliffing_Around
Humid and hot , how to manage ?
How to manage temperature and humidity without ac in super hot and humid climate ? Will portable ac inside the box help ? The dehum doesn’t works correctly cuz of open air spots
Week 5
Setup. Ventilation
3y ago
4
4
Solved
koronkonko
fan from bottom
Hi! is it a good idea to blow fan from bottom to plants? Of course i have a fan with carbon filter on top of the box.
Setup. Ventilation
5y ago
1
Solved
PoleKat
Looking for someone to look at my pics and give me advice on ventilation for mini grow room. Also if my plants look good for day 3? Any tips? Thanks!!!!
Hi, wondering is you guys could look at my enclosure and give me some ideas as to when and how I should provide some air circulation to my seedlings? I plan to keep them in here for the next couple weeks like a small grow room. Also, do they look happy for day#3? Advice? Thanx
Week 1
Setup. Strain - Autoflowering
Setup. Lighting
Setup. Ventilation
6y ago
4
2
Solved
BudsRus
Small set up ventilation
Just ordered a second oscallating fan for my 2x2x4 foot grow tent, would a 4ich Inline fan been more suitable and just the one oscillating fan?
Setup. Ventilation
5y ago
1
Solved
NoBammerWeed
Extraction and ventilation of 1.2x1.2x2m tent in bedroom.
Hi, trying to refrain from cutting a hole into ceiling for extraction, can i suffice with the extraction ducting directed to an open window? will this 'mix' the tents expelled O with enough fresh CO2 for passive intake? 1.2x1.2x2m tent, 600wHPS aircooledhood, 4"RVK, PassiveIntake
Setup. Ventilation
6y ago
4
4
Solved
RecordSet
2x2 Circulating Fan
What is the best circulating fan for a 2x2 tent available on the european market? I bought a Secret Jardin MO20 oscillating fan, and I highly regret it because I have read several reviews mentioning that it can catch fire. Is there any other good alternative for circulating air?
Setup. Ventilation
1y ago
2
2
Solved
Abacus
Axial in-line fan
I have a tent 60x60x140 cm, and in output a carbon filter (and made refilled, could I filled to much?) inside the tent and outside an axial in-line fan VENTS 100 VKO1k turbo, Maximum capacity - 137 m3/h. A friend say me that probably is not enough.
Setup. Ventilation
3y ago
9
Solved
Luna91
Grow room too hot solution!!
Hi👋🏼 What is the best cooler ,AC or climate changer for a 1x1x2 tent with 2200w led (veg/bloom On)? I’m looking4 something that dehumidifies as well and changes the temperature from 32 to around 25C. Do you recommend sth that fits in with a convenient price?
Week 5
Setup. Ventilation
5y ago
2
2
Solved
TheHighentist
Keeping humidity up and steady (Fan speed non adjustable)
How do i keep humidity up and steady? My exhaust fan has no speed control and drops the humidity. I have my humidifier on almost full blast(not full blast because of i dont want it to overheat) a wet towel and a bowl of boiled water. Does the exhaust fan need to run in veg state?
Week 1
Setup. Ventilation
4y ago
4
3