The Grow Awards 2026 🏆 
Co2
Chaweederstarted grow question 5y ago
I just put co2 in my flower room should I turn off my exhaust fan and other fans in the room? I'm using a 20lbs bottle and reg,
Solved
Setup. Ventilation
likes
Bloombusteranswered grow question 5y ago
Привет, друг! 👋
Нет, не выключай вентилятор! CO2 тяжелее воздуха в 1.5 раза! он опуститься вниз, в районе пола и будет у корней, там где ему и нужно быть! 👌
Удачи, бро! ✊😇
Similar Grow Questions
Solved
Medica
I made a firebomb?Is it a fire hazard if 5v computer fan is jammed and the power is on for 2-3 weeks?
I'm far away from home and I have camera in my growbox. A tape has fallen to the fan and it is not rotating. Can it heat up so much that fire starts? Should I drive 1600km for that?Setup. Ventilation
5y ago
6
6
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
growingpepini
drying with very hot temp? DIY temperature control?I am about to harvest and I cannot dry my buds in a fresh place. I have an tiny garden shed where yo do it bud it gets very hot in there. I tried the place with a fan on for more than 24h with a tiny bud and it was crunchy after 3 days.suggestions on how to make the place cooler?Other. Harvest - Drying
Other. General questions
Setup. Ventilation
5y ago
2
5
Solved
rimzytfa
Humidity problemsCan I have some advices on how to lower my humidity? I’m having some troubles lowering it since my plant is now flowering. Usually I can’t lower it from 60% while my temps are always on 27/28 C during lights on.
I will leave a pic of my setup here. Should I change something?Setup. Ventilation
4y ago
1
6
Solved
FingersCrossed
How to keep spacebucket coolEven when lights are off, bucket temperatures can reach upto 40*C rarely seeming to dip below 30, icepacks help lower temp and raise humidity for a bit, i worry the 2 passive intakes i have arent large enough, although the room itself is very warm too, air con only option?Week 2
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
blindspot
Degree problemI have a setup like this and I'm trying to find a solution for degree, i got alaskan thunder auto and it's stressed a little bit. I wanna make there cooler. What should i change or add ? There is 30 degree when light is open. when it's closed there is like 26-27 degree.Setup. Ventilation
3y ago
2
3
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
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
AlienScrOG
co2co2 ... how long does a 1 kg cylinder last 5 square meters of external surface of the box approximately 10-15 cubic meters around the box outside the box box measures 50 cm x 120 x 190 high now you can do itSetup. Lighting
Setup. Ventilation
Feeding. Other
4y ago
4
5
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
TripleCcannabis
Grow tent climate controlIm looking for a product that will control the temperature inside my tent automatically. Something that I can plug a heater and ac into and it will turn them on and off to keep the temperature optimal. Im also looking for a product to do the same thing with humidity. Suggestions?Setup. Sensors
Setup. Ventilation
5y ago
3
Solved
AccidentalB
High RH in flowerI find it really hard to keep the RH below 50%, especially at night when temps are low. I have a dehumidifier in the room where my tent is in but even when it's below 50% there, it still is above 50% in the tent itself. Can somebody explain this? Probably help me with a solutionWeek 14
Setup. Ventilation
3y ago
1
1
Solved
Keep_er_lit
How to keep tent warm?Hello....first time grower and plants seem to be happy.
Recently installed an online fan and filter but losing a lot of heat..
How do I keep a steady temperature?
Have tube heater inside tent ...but makes little difference..
Thankyou for any helpSetup. Ventilation
4y ago
1
1
