humidity %decrease

funktions

Well-Known Member
How can I lower my humidity % im in flwering stage now and my humidity % is 57-60 how can I lower to 40-50 % can I use damp rid my grow room is a 4x4x7 grow tent don't want to get any mold on my buds
 

itsahobby

Member
try turning your extractor fan up a bit, getting rid of warm should bring it down..

Im still learning, so i may be wrong :D

:peace:
 

tehgenoc1de

Active Member
Yeah man get a couple big tubs of damp rid. I stuck a big tub and a small tub in my room (2x5x7) and it went from 65% humidity to 30% in about 3 days. Then I just took one out let it rise and have been playing it like that since, staying around 40-50%.
 

funktions

Well-Known Member
How long does the damp rid work and which one ta get I looked up damp rid their seem ta be different kinds
 

tehgenoc1de

Active Member
Dunno how long it will work probably depends on how long it's really humid, the tub says 6 months I think. I bought the big tub of it, it's the one for RV's and second homes. Think it was about 10 bucks.
 

lince

Well-Known Member
Watering in the mornings (instead of evening or night) can also help and if you can raise the temps a little, that will lower the rh
 

funktions

Well-Known Member
When using damp rid system do I use both bags or will one work just fine im down to 52% only been bout 3 hours anyone
 

jdubman

Well-Known Member
increase the airflow in the room
This only works to a extent.... I say that cause if it's too cold outside you can only vent for so long. Especially when Humidity becomes a problem which is typically during the dark cycle.
Here's my 5x5 tent, I have two 6" vortex fans, 1K watt Lumentek, XXXL hood, a 40 pint frigidaire dehumidifier, 1/4 chiller, all stuffed into this tent.
Humidifier only cycles when the lights are off and only is really used about 2 weeks into flower and on. That's when the humidity rises to the point you need
to use it. I exhaust at night till the temp reaches my set point. Then all exhaust stops and the dehumidifier starts cycling when humidity builds up. The humidifier produces
heat which raises my night temp a couple degrees/ This can kick on the exhaust which will bring it back down again and shut off. It cycles like that all night, especially
late in flower.

Dub
 

Attachments

sk'mo

Active Member
Long term, the best solution is to use a dehumidifier. I placed mine outside the grow area so that the air brought into the area is dry (Also keeps the basement dry.). My exhaust runs 24/7.

I wouldn't worry too much though, even running at 60%, if you have good circulation and air exchange you most likely wont have any problems in the short-term.
 

jdubman

Well-Known Member
Long term, the best solution is to use a dehumidifier. I placed mine outside the grow area so that the air brought into the area is dry (Also keeps the basement dry.). My exhaust runs 24/7.

I wouldn't worry too much though, even running at 60%, if you have good circulation and air exchange you most likely wont have any problems in the short-term.
Yah man, 60% or less with circulation you should be ok with most strains. If you are running your exhaust 24/7 you obviously don't live somewhere cold. You can do that in Socal, not Seattle
Is that Ontario Canada? If so, where do you pull your air from?
Dub
 

sk'mo

Active Member
Good things grow-o in Ontario!
In the winter I just recirculate the air into the basement to conserve energy. The dehumidifier draws out excess moisture and the furnace provides fresh air.

I'm actually working on separating the exhaust from the lights so that the exhaust runs [outside] on an as needed basis (humidistat) in the winter, and lights provide warm air to the basement.
 

sk'mo

Active Member
Just get a cheap dehumidifier.
Just made me think of something... One reason I put the dehumidifier outside the grow area was because I figure basements are a good place for mold to grow, which leads to spores being drawn into the grow, so why not ensure that it is not a good place for mold to grow as well. This lead me to purchase a dehumidifier large enough to dehumidify the whole basement, which lead to spending more money than I had hoped/wanted to...

Point is: Buying a cheap dehumidifier is fine, just make sure it is the right size to dry the volume of air you want it for.
 

jdubman

Well-Known Member
My Frigidaire 40 pint is good for like 1200 square feet and I only use it in my 25 square foot tent... lol.
That's why it only runs for about 5-10 sec at a time. I have to empty the tank every week or so during heavy flower.
Cost was $140. I use it for controlling my drying spot as well.

Dub
 

Attachments

Top