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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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Complain
Selected By The Grower
Similar Grow Questions
Solved
Nzmk902
Help. Humidity too low
Any hacks to raise humidity in my grow tent?
Setup. Ventilation
5y ago
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Stegogrow
60cmx60cmx160cm Grow tent with 100mm 250 m3/h extraction filter
Hi I have a 60cmx60cmx160cm Grow tent. Is a 100mm 250 m3/h extraction fan with carbon filter good for the grow? Should I set on the first or second speed ?
Setup. Ventilation
3y ago
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Snoopydooby_420
Hello, I’ve connected my exhaust fan and its extremely loud to a point where i cant sleep in the same room. Is there a solution which doesn’t inquire me to buy a new one?
Setup. Ventilation
2y ago
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Nicogreen
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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.
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2y ago
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VitaMan
Peltier dehumidifier @300ml per day adequate for 3x3x6 tent? Alternatively, a conventional dehumidifier outside the tent?
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Week 2
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3y ago
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TheHighentist
Recommendation for small dehumidifier Question about humidity control in grow tent
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Setup. Ventilation
4y ago
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Solved
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I've got my photoperiod doing well in a 2x2 tent. I'm trying to regulate my VPD with what I have on hand. Currently I'm running my exhaust fan for 8 minutes every hour to get an average VPD around 1, but I'm concerned about the swings. Am I micromanaging?
Setup. Ventilation
Setup. Other
1y ago
1
Solved
PortkeyCannabis
Humidity
I’ve been seeing a lot of people have a much lower humidity. I’ve been keeping mine at 75-80 with around the same temps. Is that to high?
Week 4
Setup. Ventilation
4y ago
1
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Solved
GrowGirl419
Fans
Do you guys leave all of your fans on all the time? I do but I'm wondering if I should. My best fan is getting hot hot hot however, if I turn it off I'm afraid it'll be too hot in my room or the air will get stag. What do you do? Rotate fans? Turn em off for a bit each day or?
Week 10
Setup. Ventilation
5y ago
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Solved
Hou_Stone
Hello m'y room is 100x100x200 cm If I put a 150m3/uur fan as in the photo is this sufficient as an air inlet? I have an adjustable 400m3/ur extractor with carbon filter in the room
Setup. Ventilation
3y ago
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Chaweeder
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Setup. Ventilation
6y ago
2
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BullWeedDog
Utilizar filtro de carbono sin manga??
Puedo utilizar mi filtro de carbono sin la manga que trae para ponerle?? Es que al ponerla pierdo fuerza en el extractor y no se genera la presión negativa ya que él tuvo del extractor está doblado??
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Other. Other
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3y ago
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Hou_Stone
Air inlet ?
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Setup. Ventilation
3y ago
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Other. Harvest - Drying
Other. General questions
Setup. Ventilation
5y ago
2
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Solved
masdefs33
Tried mini dehumid. still issues with portable ac (added @ 9pm 6/2) see pic for graph
Avg RH was 45%,had spikes @ 80% RH in dark, added portable ac to my tent. It raised avg. RH not lowered. Intake @ 40% RH that runs on a humidity cont. set @45%Now Day RH ~52%, Night RH ~60%.Ac starts RH spikes to 70% in dark. WTF am I doing wrong. Id hate to lose it to mold.
Other. General questions
Setup. Ventilation
3y ago
5
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SmylinPupil
4” filter upgrade help! Smell
Hey guys, I’m wondering what is a good recommended 4” filter for my tent? I got one that came with a fan, ducting and the filter off eBay but the filter is the shits. I had it vented in the room but the smell was brutal. It’s vented out the window under my deck, reeks there now.
Setup. Ventilation
6y 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!
Other. Other
Setup. Lighting
Setup. Ventilation
6y ago
3
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Solved
Maskedcucumber
Humidity won't go down because of clay pebbles ?
Though my extractor is at high speed, I have a hard time with controlling humidity, I hardly go under 68%, specially during the night. Probably it's the clay pebbles since the pots don't have a lid. I placed the temp/humidity probe near the tallest leaves. what do you think ?
Week 5
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Setup. Ventilation
4y ago
3
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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
3y ago
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iMpulsive_Grow
New grower and high tent temp. please help
So I have a 2by2 tent and temperature is staying around 80 degrees. I have a total of 3 fans in there and lowered the wattage on my 1000w hydro LED lights. What else can I do to keep it at optimal temperature? Also has a Hydro Co2 booster fan making it 4. any suggestions please?
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Setup. Ventilation
6y ago
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