Check the winners The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Northern lights low odor ??
Wuutownwarrior
started grow question 6y ago
Im growing 3 Northern lights autos was told there low odor strains is this true ? Does anybody know any outside greenhouse odor control techniques was wondering if anybody has used ona gel I have planted some marigolds and other plants with it .
Solved
Setup. Ventilation
likes
Weedster
answered grow question 6y ago
I have duct fan removing air through activecarbon filter and it works very well 🙂(I also have tested Ona gel it was very effective👍)
1 like
Complain
Selected By The Grower
Similar Grow Questions
Solved
xanado18
Best way to cool 5x5 tent
Trying to find a way to cool a 5x5 tent, the ambient temp in the room is a sweltering 100 degrees. Is there some kind of AC unit that hooks directly into an inline duct that I can pump directly into the tent? Looking for an overall solution to temperature control!
Setup. Ventilation
6y ago
1
1
Solved
guerilla
80% RH IN FLOWER?
Hi all I know it's recommend to keep below 60% in flower.. I'm struggling to do this the last 2 weeks 😬 I got a small dehumidifier but it doesn't seem to do much! Iv kept the air flow as high as possible.. Please can I get some advice on this! G 💚
Week 13
Other. Mold
Plant. Other
Setup. Ventilation
5y ago
6
3
Solved
Ph0en1x
Struggle too keep Plants healthy
Hey, I really struggle with the heat. In the night, when my light Mars Hydro FC-E4800 is running currently at slightly less then 25%. My tent already reaches temperatures of 29Celsius. Though to increase the strength of my activated carbon filter, decreases my humidity too much
Leaves. Curl down
Plant. Stem - Weak
Setup. Ventilation
10mo ago
1
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
3y ago
8
6
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
GoodVibeSpreader
Light and Tent, Indoor Grow ?
Hi people, One of my friend planned to grow indoor, he has the perfect room for it but since he's starting and we're growing cannabis on a budget I wonder what light and tent should we start with (for everything else i can help him since I already grown weed outdoor) Thanks !
Setup. Lighting
Setup. Ventilation
5y ago
1
1
Solved
GodOfAnger
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
3y ago
1
1
Solved
FlavorzChaser
Dehumidifier help
Can anyone recommend a reliable large room dehumidifier that I can purchase in the uk please
Week 5
Setup. Ventilation
6y ago
2
2
Solved
Erasmus
Air flow method
I removed the hood from the home AC to run cold air directly into the grow tent with a 4 inch duct at the bottom. I have an inline fan to push hot air out to balance out the air pressure at the top. Is this a good idea or should I just have a fan inside with no in or out?
Week 4
Setup. Ventilation
6y ago
5
Solved
Hou_Stone
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
3y ago
2
2
Solved
BrannabisTHC
Is this too much wind?
Hey growers! I was just wondering if this is too much wind
Setup. Ventilation
4y ago
1
4
Solved
Neelbilly
Lime green
Week 6 slowly progressing... however i think there is a problem. Maybe PH deficiency or Nitrogen deficiency?? Referring to small leave burns on some places and lime green sprouts. Still enough space from light. Ps: dont have a ph meter will need to get one
Week 5
Leaves. Other
Setup. Ventilation
6y ago
4
4
Solved
Ign33l
Substrate lil fly
So: I got a dehumidifier to regulate and keep the humidity in 50%. When i opend the deposit of the water of the dehumifier i found these little flies that are the classic Substrate fly (nasty but no harm). Do yall think that the dehumidifier got them? Has this even happened to U
Week 6
Setup. Substrates
Setup. Ventilation
6y ago
1
1
Solved
Percy
New tent
Hs40 tent with marsydro ts600 or philzon 600w Running with black orchid 4" intake ventillation kit and mix flo inline for carbon filter is this a good set up Or should inopt for the ts1000 with dimmable options my tent is only small and dont want burn etc please help
Setup. Strain - Autoflowering
Setup. Lighting
Setup. Ventilation
5y ago
6
7
Solved
lonelystoners
Grow temp
Hi, so my lamp is running at 100%, 20/4 My thermometer says my ax temperature is at 33 Celsius max. Is that bad?
Week 1
Setup. Ventilation
5y ago
7
4
Solved
buddhi_coop
Co2, temp
Are these okay levels? Been kind of hard to manage the heat in my tent. Weather here is super hot right now.
Other. Mold
Other. General questions
Setup. Ventilation
5y ago
1
Solved
Munk12
In-line fan use
I’m just wondering how much to run an in-line fan. I’ve read every 1-3 mins, but I would like to know how long does it run in between those times? Is it constantly turning on and off? Do I need to put it on a timer? Thanks.
Week 2
Setup. Ventilation
5y ago
2
1
Solved
Marsledgrower
Best Dehumidifier? need help
My humidity is around 65% right now. what is The Best Dehumidifier on the market right now. Maybe a 50 pint or possible a 70 pint .. I got a 5x5 tent and a 2x4 tent In same room. Humidity is around 65%-70% but I want it to be around 45-50% when I go into flower..Thanks guys.
Other. Other
Setup. Ventilation
5y ago
4
4
Solved
BigDaddyK
Humidity ?
When should I remove the top of the propagator ?
Week 1
Setup. Ventilation
6y ago
6
4
Solved
Ganjaprenuer
Grow room / tent venting
Need help setting up a good vent system for a 600w hps air cooled reflector. If someone could just help by explaining a system that would work to cool my light and control smell.
Setup. Ventilation
5y ago
4