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Back to Grow Questions
Co2
Chaweeder
started grow question 6y 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
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Bloombuster
answered grow question 6y 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! ✊😇
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Selected By The Grower
Similar Grow Questions
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
PenguHB
Dehumidifier advice
I am looking for an efficient, non-electric dehumidifier for the grow room. Do you think one of these would work? Can you recommend anything specific? Are they effective? About 30m3 total grow room volume.
Setup. Ventilation
4y ago
4
4
Solved
jokgga
Mycelium or Fungus - Too much Part 2
I am seeing a ton of mycelium on all of my autopots. Because I have a bottom feed system, it is hard to keep my top medium wet without getting mold. Is this going to effect my end result if I do not do anything about this? Should I leave it alone or put sand on it? Thanks all
Week 7
Other. Mold
Other. General questions
Setup. Ventilation
5y ago
2
3
Solved
Foggedaboudit
Do air extractors fit with any grow tent or do they have specific sizes?
Setup. Ventilation
3y ago
1
1
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
Glennh109
High humidity problem
The fan heater i use 1500w seem to heat the room up too quick gets up to temp quick but carries on rising another 1.5 degrees before vent fan kicks in!! Do I need to downsize the heater space is about 1.5m2
Setup. Ventilation
5y ago
1
1
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
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
3y ago
2
2
Solved
STAYINGONMYMAINCBATORUNTWO
Heat
I’m thinking of putting a 12” fan up high to move the air to one space and an extractor to take out the air and a second cooler as I got up to 30c on a day of 15c so need some measures! Question is will it work? Don’t want to waste time on pointless things!
Week 2
Setup. Ventilation
6y ago
5
5
Solved
Ridgeyreg
Temperature probe placement
Where do you put the temperature/humidity probe? Ours is connected to an AC infinity Controller 67
Setup. Ventilation
4y ago
3
Solved
GringosGarden
High humidity
The humidity hit 63% today in my tent for 4 hours while I wasn’t home I had the exhaust fan on full blast and 2 oscillating fans in the tent once I got home I turned my dehumidifier on it’s down to 45% now will it be ok or do I need to watch for bud rot?
Week 7
Setup. Ventilation
6y ago
3
2
Solved
GodOfAnger
ventilation for a 4x8 ? basically is that too much negative pressure and if so should I get anther intake ?
currently using a 200mm inline exhaust fan that has 914 m3/h(537,9 cfm) max currently using it at its medium setting of 792 m3/h(466,15 cfm) and using a 125 mm inline intake fan with only 330 m3/h (194,23 cfm). Should I get anther intake fan or should I put the exhaust to low 680
Other. General questions
Other. Other
Setup. Ventilation
2y ago
1
2
Solved
supermegadjj
Extraction can size for 2x2x5 tent ?
Hi guys I'm about to set up my first box, I'm missing just the extraction. Box is 2x2x5 and I've got led light 120w. No smell is the most important for me. Is 4" fan with carbon filter going to absorb all the smell? Many thanks !
Setup. Ventilation
6y ago
3
3
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
6y ago
2
5
Solved
Newbiegrower420
Cardboard box method for dehumidifier
Hi 👋 can anyone tell me what success they’ve had using the cardboard box method for housing their dehumidifier? My unit is heating up inside the tent so much as it works harder during flower to keep humidity levels lower. Before I make the switch I wanted some opinions?
Setup. Ventilation
5y ago
1
2
Solved
SupremeTimmy
Gathered a new tent temperature inside allows you to do without blowing. How much will affect a plant that grew without wind at all
Week 2
Setup. Ventilation
6y ago
6
5
Solved
Theia
What air temp and RH should i be trying to acheive for flowering?
What should i be trying to acheive with RH and air temp for flower stage. I recently was subject to some intense heat and RH shot up to 92%. I have ordered a De humidifier to combat that and i have a fairly decent control over the air temps but i am not sure what i am trying for.
Setup. Ventilation
5y ago
4
4
Solved
SneakyDog
Do I really need a exhaust fan ?
If my 2x2 grow tent sits at 26c and 68% humidity without an exhaust fan do I actually need one ? The top of my tent, the vent is open and I’ve opened the observation window at bottom to allow air in. I’ve two fans, one at canopy level and one in top corner opposite the top vent ?
Setup. Ventilation
4y ago
6
4
Solved
Aldo90
Help with airflow. I've got an extractor and 3 circulating fans. Would a powerful inline fan be better than the 3 circulating fans
Question about environment here. I've got a 5x5 tent. Total 46m area. 460m3/hr needed to be extracted. Extractor fan is capable of taking 600m3/hr. I did have in an inline fan but it's no longer working. Do I need another inline fan ?? I've opened two ports for passive intake
Setup. Ventilation
3y ago
1
1
Solved
JL420
Duda Temperatura 30/31 en cultivo 60x60 led lumatek attis 200w
Hola ¿que tal? Tengo un armario de 60x60. Uso un Lumatek attis 200w al 80% (160w) y mis plantas estan a 30cm de las puntas, la temperatura en las puntas es de 30-31 grados centígrados. Es verano y fuera hace 27 29 grados. ¿muy malo? ¿Alguna solucion sin gastar dinero?
Week 6
Setup. Ventilation
4y ago
7
5