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
Can I use a 100mm carbon filter on a 125mm exhaust?
EXZELENS
started grow question 5y ago
So, the title is pretty straightfoward. I was thinkin about getting some 127mm extraction tubes and make it really tight to fit the filter. TIA
Solved
Setup. Ventilation
likes
DreamOn
answered grow question 5y ago
Yeah should not be a problem, you can just use a Pipe Fan Connection Reducer 100 mm / 125 mm between the exhaust and filter
1 like
Complain
Selected By The Grower
DreamOn
answered grow question 5y ago
https://www.amazon.de/-/en/Weedness-Connection-Reducer-Mounting-Ventilation/dp/B07VKDB25Z
likes
Complain
Similar Grow Questions
Solved
Cannabingrowin
Tents. 48 inches by 48 inches and 80 inches tall. What is your brand and why?
I need a new tent. I am thinking AC infinity or Vivospectra. What should I look for? Strength, Thickness of material, Holes for ducts, anything else? What is your reccomeded tent and why? Also how long do AC infinity carbon scrubbers last with active in and outake they are 8 inch
Setup. Ventilation
Setup. Other
4y ago
1
Solved
BUDLUST
Is an 8" isomax air 2 inline fan & a 8" mountain air too big for a 4x4 tent? I'm new & may of been sold stuff to powerful so the guy could make a few quid. I told him I needed it to be as quiet as possible! What turned up at my door looks like a turbocharged charge sheet!
Setup. Ventilation
5y ago
2
2
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
MonkeyDonkey
Speed of outgoing TD Silent
Do you adjust the ventilator speed over time? I have a TD Silent with 5 possible speeds and keep the lowest speed at night (so I can sleep) and on 3 or 4 during day to be sure. Is there a trick to find the best yet lowest speed?
Setup. Ventilation
5y ago
1
2
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
Superjd
Overheat in tent? Measuring Correctly?
HID lights on seedlings day 2 (25 cm dist.) I was alarmed by temperatures rising since yesterday to 35 despite exhaust & small fan inside tent. Tent doesn’t feel overly hot. moving sensor to above light it reads at a good 26-27. What’s the best way to understand tent temperature?
Setup. Ventilation
6y ago
2
3
Solved
Philski87
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
6y ago
3
Solved
madflavoursgarden
Grow Tent/Room setup in the basement - dehumidifier or humidifier needed?
I’m planning a small grow setup in my basement and have a room that’s holding a steady 17–18 °C (62–64 °F) with about 55–58% relative humidity. My plan is to vent the exhaust from the grow box straight outside through an existing duct. Will I need a de- or humidifier? Thanks!
Setup. Ventilation
Setup. Other
7mo ago
2
2
Solved
Donkeybuds
Air con unit
I have 8ft x 8ft insulated room I want to remove the intake and exhaust fan due to noise. I want to run air con unit for heat and cooling may be co2 bottle would this be ok
Setup. Ventilation
5y ago
1
1
Solved
Lordcrow
Temperature trouble
What's the best thing to do ? 1-Open the door of my tent to lower the temperature and lose humidity. 2-Keep the heat at 80F and I keep the humidity in my tent at 70%.
Setup. Ventilation
3y ago
1
1
Solved
NonameGrowDude
grow tent / lung room temps???
Dialling in my tent and want to compare to others to see if more ventilation = lower temps. What temperature and humidity difference do you have in your tent and "lung room"? Do you exhaust your air from the tent to the outside of your lung room?
Setup. Ventilation
2y ago
1
Solved
OneDropOfTHC
Too High humidity? how do i keep it low.
The humidity in my tent is about 65%, fluctuating betwwen 60% to a max of 71%. Is this high humidity a problem? What can i do to keep those levels down without a deshumidifier? (1x250Watt CFL inside a closet with a oscialting fan)
Setup. Ventilation
5y ago
5
3
Solved
TioRandy
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
Hou_Stone
it's getting too hot. I added 2 fans inside. Do you think I can enable them 100% of the time/all day? Or is it bad for my plants?
Week 11
Setup. Ventilation
3y ago
2
1
Solved
DawgHaus
New Extractor Fan packed in
Brand new extractor fan had packed in after 3 days use 🤦‍♂️🏻🤦‍♂️🏻I’ve set up a fan at the end of the cool tube to blow air over the bulb.. and left the door of the room open and put oscillating fan at the entrance. Any advice? Worried about the bulb getting to hot.. 🤦‍♂️🏻
Week 1
Setup. Ventilation
5y ago
2
2
Solved
Foggedaboudit
Do air extractors fit with any grow tent or do they have specific sizes?
Setup. Ventilation
3y ago
1
1
Solved
Unkraut
Odor Problem in the last 2-3 weeks
i have a problem with smell in the last 2-3 weeks... i have a 0,80mx1,50m tent with a Rhino Pro carbon filter 765mÂł/h inside the tent and a carbon filter 800mÂł/h on the exhaust. smell inside the grow room is quite subliminal but i can recognize it... what would you suggest?
Week 13
Setup. Ventilation
5y ago
3
3
Solved
Hou_Stone
CO² diffuseur use ?
Hey, I added a CO² diffuser bag in my tent. do you have any tips for using it? (smart bag from servovendi) I read somewhere that you have to disable the extractor for the bag to be effective. It's true ?
Setup. Ventilation
2y ago
2
2
Solved
Ertomid
reduce humidity
What techniques exist to decrease humidity naturally without something made special for?
Week 5
Setup. Ventilation
3y ago
5
3
Solved
Nicogreen
Placering af hydro meter
Hvor i teltet er det bedste sted for hydro-termometer? ️Da jeg har blæser i bund! Og i top.! Plus udsugning til kulfilter nederste højre hjørne v åbningen (altså det første hul i højre nedre hjørne.
Setup. Ventilation
2y ago
1
2