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Back to Grow Questions
fan from bottom
koronkonko
started grow question 5y ago
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.
Solved
Setup. Ventilation
likes
Louder
answered grow question 5y ago
I run one that blows over the top of the soil and another over the canopy. Don't see an issue with what you're doing
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Selected By The Grower
Similar Grow Questions
Solved
Carlotta
Carbon Filter
Hello growers! I'm thinking of removing carbon filter's outter fabric. It affects my exhaust dramatically. Does anyone knows if this is going to make it insufficient or ruin it? (i think that this layer prevents humidity entering carbon particles)
Setup. Ventilation
6y ago
3
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Solved
Shotiie
Do I still need regular fans inside my tent if I have in and out ac infinity 6 in fans?
Do I still need regular fans inside my tent if I have in and out ac infinity 6 in fans?
Setup. Ventilation
5y ago
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Solved
SevenStoned
Should my inline fan run perpetually?
I read it's important to exchange the air in your grow area once per five minutes. Because I read that, I've had my inline exhaust fan running in my tent since the beginning of my grow. Is that right?
Week 2
Setup. Ventilation
6y ago
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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
4y ago
1
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Solved
Gazeye
Risk of bud rot with these conditions?
My tent keeps bouncing between 55-65% throughout the day during mid-late flower stage. Staying between 24-26 C. I have two fans moving air in the tent and the plants are we defoliated. An in-line fan is pulling air out. How much at risk am I for bud rot? Thanks!
Buds. Other
Setup. Ventilation
3y ago
2
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Solved
Dillsnills
My power went out for a few hrs, humidity got really high should I be worried or is there anything I can do to help w the stress caused?
My power went out for a few hrs yesterday, humidity in the tent got up to 90% temps were around 70, should I be worried at all?week 1 of flowering, they jus started showing there white pistols, jus wondering if there's anything I can do. They looked ok this morn.
Plant. Other
Setup. Strain · Autoflowering
Setup. Ventilation
5y ago
1
5
Solved
Overgrotho
Temps in Flower with Co2?
Shall I keep 29C as my temps (which is said to be ideal for Co2-enhanced grows) or slowly decrease (simulating autumn)?
Setup. Ventilation
6y ago
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Solved
Newbiegrower420
Humidistat levels vary wildly between Inkbird and ETI humidistats..
I have two humidistats, one is an Inkbird 200 for control, the other is ETI 810-195 just for display.. The ETI is showing roughly 9-10% higher humidity levels compared to the Inkbird. Does anyone know which is more accurate? I want it get these humidity levels just right 👌🏼
Setup. Ventilation
6y ago
2
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Solved
buddhi_coop
Temperature Control
Help! How do I get my temperature down? I have all 3 vents open & 4 fans blowing. My air duct hasn’t come in the mail yet so I can’t set up my exhaust fan yet.
Setup. Lighting
Setup. Ventilation
Setup. Other
5y ago
3
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Solved
Smokin_Joe
Circulation / Exhaust
Getting ready to install carbon filter; found myself wondering if growers typically leave their filters/exhaust/fans on during dark periods? Up to this point, I've had everything on one power-strip/timer: circulation fan, exhaust fans, and lights. Should I keep anything on 24/7?
Week 11
Setup. Ventilation
6y ago
2
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Solved
Hou_Stone
air inlet ?
I have a 100x100x200 cm chamber with a 205 CFM extractor. But I don't understand what is needed for the air inlet. leaving a hole open at the bottom with nothing is enough ?
Setup. Ventilation
3y ago
4
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
Ghost2022
Air flow
Hi guys, I have ordered an inline fan and carbon filter with temp and humidity controller by spiderfarm. Will I still need the normal fans or does this replace the need for them? Thanks guys
Week 7
Setup. Ventilation
4y ago
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Solved
Ema26
What’s up guys me again😂 I’ve got my hps up and running and I’ve got the temperature under control by having my fan blowing directly at the light and I’ve added a oscillating tower fan. How can I keep the temps up when lights go off? Many thanks!
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Setup. Lighting
Setup. Ventilation
6y ago
3
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MomoCookie
Where is the best place to buy a duct fan and activated carbon filter?
Setup. Ventilation
6y ago
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WeedMannz
hi guys
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Setup. Ventilation
6y ago
4
Solved
espaiderman
Ventilación ideal en 1x1 metro
I need a suitable ventilation system for a 1x1 meter grow tent where I have a SCROG with 2 pots of 25L. What intake, exhaust, and carbon filter system would be recommended? Under no circumstances can I allow any smell in the grow. I use LED.
Setup. Ventilation
6y ago
2
3
Solved
Newbiegrower420
Cooling whilst using humidifier outside a small grow tent
I have a small 90x90x60cm grow tent with a VIPARSPECTRA 300W LED. Heat levels are crazy and running a small humidifier with ice blocks inside the tent along side extraction isn’t cutting it. Could I buy a bigger humidifier, keep it outside the tent duct it in to keep it cool?
Setup. Ventilation
6y ago
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Growvanced
Throw out one plant?
Is it productive to kill one plant if the rest of the plants are filling out the room just fine and to promote ventilation and light penetration? I have one plant that is way shorter and behind the others due to genetic problems.
Setup. Lighting
Setup. Ventilation
6y ago
1
3
Solved
Newbiegrower420
Using humidistat to control fan, will this cause problems? So far fan running for 30 secs every two minutes! Plz advise if this is not a good idea??
My exhaust fan is to powerful no speed control just two settings. On the lowest setting the fan is still sucking all the humidity that my humidifier creates out of the tent. So I have bought a humidity controller hooked it up with the humidifier and fan.. It’s working great!!
Setup. Ventilation
6y ago
4
4