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Back to Grow Questions
fan from bottom
koronkonko
started grow question 6y 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
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Louder
answered grow question 6y 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
kardel
Guys, Need help about Droopy again, Is Mist from humidifier is a culprit ?
My plant are happy but she look droopy "when I turn on humidifier" 1st pic is today, actually she not look like this before i turn on humidifier. 29-30'c and 65%RH 2nd pic is yesterday when I turn off my humidifier. 30-31'c and 45-50%RH
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Week 2
Plant. Wilting
Setup. Ventilation
3y ago
1
3
Solved
Chaweeder
Co2
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,
Setup. Ventilation
6y ago
1
Solved
420Highlifecouple
BEST Dehumidifier
Heys my fellow Green lovers QUICK QUESTION.Whats the best dehumidifier for value and quality???Having trouble with temp and humidity.
Other. Other
Setup. Ventilation
5y ago
1
1
Solved
dauntless
Humidity at night. Should I add a heater or...
Lights on day, my temps are perfect, and my humidity is 55-59% at 74-80 degrees F. Night, temps drop to the 60s and humidity goes up to 70-78%. Bought tiny dehumidifier to add, and I could also small heater. Is 70-78% gonna mess me up? Indoor/Outdoor And Winter is coming. ;)
Week 11
Setup. Ventilation
6y ago
2
Solved
DoomSmoker
Can't vent exhaust fan outside, is this a problem?
I have my 2x2x4 tent in a closet, with a 4" carbon filter inside the tent and a 4" inline fan outside of the tent, exhausting. But I have no way of directing the air to outside or even out of the room. Will this be a major problem for me? Room is otherwise AC'd via central air.
Setup. Ventilation
5y ago
1
4
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
2y ago
2
2
Solved
MiyaguiOkPolilla
Demasiado calor
Es posible que la lámpara CMH se calienta demasiado debido a las horas que lleva de uso? 🔥🌱 Anoche llegué a casa y me encontré con este panorama, algo con lo que no puedo lidiar ya que tengo 2 extractores y 2 ventiladores funcionando todo el tiempo ⏲️
Setup. Ventilation
4y ago
1
2
Solved
DoDrugs420
Whataretheeeeeese
The soil holds too much the water and takes too long to dry up, no fan or temps will drop bellow acceptable, so besides taking advantage of the sun whatelse to do? They seem to hold well and have steady grow even without watering for 5 days... they dont need oxigen or what?
Week 3
Setup. Strain · Autoflowering
Setup. Substrates
Setup. Ventilation
7y ago
8
4
Solved
TeeAychCee
Best way to cool your tent/ growbox?
So I’ve built a custom growbox using an IKEA wardrobe, air vent for intake, two circulating fans, carbon extractor exhaust, and a 600W LED grow light. Temps average at 29 degree Celsius with the lights on full, is this too high? Best way to bring the temps down? Many thanks!
Setup. Ventilation
4y ago
2
2
Solved
HillsideManor
Would it be possible to have a closed loop ventilation system?
My tent is in a garage that gets very cold, i need the fan running so i have constant negative pressure so there is no smell. Could i just have the fan extract back into the tent with a CO2 bag in there? Heat shouldn't get too high, and only other thing i could think of was CO2
Setup. Ventilation
5y ago
2
2
Solved
BullWeedDog
Como controlar renovación del aire en índoor
How to control air renewal indoors, how often should I turn off and on the extractors and heaters in the grow, can I leave them off at night while the light is off??
Other. General questions
Setup. Ventilation
Setup. Other
4y ago
3
3
Solved
BooBoosHotBoxCornGrow
AC/humidifier
So I did get a humidifier/AC. Super cheap, $40. It seems to work. I’ve gotten it at 79-82 degrees and 45-50% humidity. I just have to keep filling the water part up every couple hours but I work from home in my room where it’s in my closet
Week 1
Setup. Ventilation
6y ago
1
Solved
IsseyBukkake
Humidity spike?
Hi there, I'm having weird issues with my humidity, it seems to be fine (40-50%) for 70% of the day, but the remaining 30% of the day it spikes up to 60-65%. Temps stay reasonable in the 5x5 tent, I have ducted air-con in the house which is on most of the day. Thank you!
Week 3
Other. General questions
Setup. Ventilation
6y ago
1
1
Solved
Trix420er
Humidity
Does humidity really have like a do or die ultimatum when planting indoors ?
Week 2
Setup. Ventilation
6y ago
3
3
Solved
Eagers
Seedling Air Circulation
Im growing seedlings indoors in a window (they are only 7 days old) but ive been wondering at what point do the plants start needing circulating air? Found limited answers online, they will be going out to greenhouse once theyre big enough but for now do they need a fan?
Week 1
Setup. Ventilation
7y ago
4
5
Solved
Maskedcucumber
Humidity issues near flowering
So I installed an intraction (145 m3/h speed1) and aluminium foil on the pots but humidity is still hight like 75% when nightime and the lowest is 65%. Probably the water evaporates by the pots (drip, clay pebbles). I have no more ideas. Do I have to buy a deshumidifier? Thx !
Week 6
Setup. Ventilation
5y ago
3
3
Solved
WeedMannz
hi guys
hey, guys, sorry to bother you, but for a grow 40x40x120, this suction will work?https://www.amazon.it/dp/B07CYRF958/ref=cm_sw_r_wa_apa_i_p.cUEb7SZTBHC
Setup. Ventilation
6y ago
4
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
DabNinja710
couple quick questions
Do I need to close the flap to the vent during dark cycles? (Lights off during the day) and should I block lights coming from fan power, humidifier, dehumidifier, or indicator lights? Also do I need to use the carbon filter the whole time? should I ever have the exaust fan off?
Week 2
Setup. Lighting
Setup. Ventilation
6y ago
3
3
Solved
LukeLaBam
Carbon Filter smaller than Fan
Is it bad if the Fan makes 200m3 but the Carbon Filter is only for 100m3? Do I need to change it as quickly as possible? (Tent 60x60x160)
Setup. Ventilation
4y ago
2
2