By continuing to use the website or clicking Accept you consent to our cookies and personal data policy. For details please see Privacy Policy
Accept
Dehumidification
GreenbudLifestarted grow question 3 years ago
When the outdoor air dehumidification fan runs it produces a periotic negative pressure in the grow room. What is preferred: a negative or positive pressure in a grow room for this method of dehumidification?
like
BudgetGrowsanswered grow question 3 years ago
Urrrrrmmm, not to sure what you mean, if we use 'passive' air flow then slight negative is preferred, the extractor fan creates negative pressure as it takes stagnant stale air out while 'sucking' fresh air in to create a cycle, to me personally unless it's sealed I would prefer negative so I 'know' it's pulling fresh air in, I wouldn't of thought this would be any different if you have a dehumidifier in the tent as well, you still want that 'fresh' air coming in, hope this helps happy growing 👍
GreenbudLifeanswered grow question 3 years ago
Relative humidity is low here so, dehumidifier is a waste of energy for me. Better to blow air into room or suck air out of room or does not matter?
like
Complain
Similar Grow Questions
Solved
hweixd
How crucial is an exhaust fan and a carbon filter?I cant find anything in my country as a kit, but would buying them piece by piece work?
Example something like in the photo connected to an air duct and then to a carbon filter?
Or if the exhaust fan is not crucial? how can i get rid of the smell in a cheaper way?
Setup. Ventilation
3 months ago
2
Solved
savethehumanseh
How can I reduce the heat in my 5x5 tent (650w light bar/6" ac Infinity and a ton of fans) without AC? Do I have to leave tent open?5x5 tent is in a kind of lung room (utility room) that stays around 20C/68F. The tent always seems to be at 30C86F with lights on. Ive added and moved fans, opened more intake vents. I have AC, but its -25C/-13F outside. Id like to drop the daytime temp 5ish degrees for flower.
Setup. Lighting
Setup. Ventilation
3 years ago
2
6
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
3 years ago
6
6
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!
3 years ago
1
1
Solved
triforcepizza
When do I need to start using my duct fan for ventilation?Should I be using my fan now, or wait until the plants get larger?Week 1
Setup. Ventilation
3 years ago
2
2
Solved
Harukisan
Silent inline fan recommendation (Europe)Hello growers, I am looking for a somewhat silent fan for my 2x2. AC Cloudline is not readily available in my area.
I'd love some feedback on those : RAM Silent 125mm, S&P TD Silent 160/100 N, GENT ECco 100mm, TT Silent M 100, DALAP AP Quiet 100mm.
Thanks a lot 👍Setup. Ventilation
3 years ago
1
1
Solved
lateKdF
6" c' filter adapted to 4" Cloudline fan?Has anyone mated a 6" carbon filter to a 4" inline fan? AC Infinity is OUT of 4" filters, so considering getting a 6" and adapting down to 4" intake on AC Infinity Cloudline.
Seems intuitive, since reduced intake restriction would be preferable, with increased life as a benefit.Week 2
Setup. Ventilation
3 years ago
2
4
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
3 years ago
2
2
Solved
Nurse
humiditythere is a space of 1.20 by 1.20 m with a height of 3 meters with a humidity of 75 & a temperature of 23 degrees.I have to increase the humidity to 40% for the last few weeks, Is there a way to do this without buying a dehumidifier? Now I have a fan and a reverse fanSetup. Ventilation
Setup. Other
3 years ago
1
1
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
3 years ago
1
2
Solved
Nzmk902
Help. Humidity too lowAny hacks to raise humidity in my grow tent?Setup. Ventilation
3 years ago
3
3
Solved
jokgga
Mycelium or Fungus - Too much Part 2I 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
3 years ago
2
3
Solved
jokgga
Mycelium or Fungus - Too much?Seeing a ton of mycelium or fungus on my medium. It is covering the entire pot. I am having problems with air circulating but have a fan at the bottom and up top, just nothing oscillating. Is this going to be a problem? What can I do?
Plant. Other
Setup. Ventilation
3 years ago
1
1
