Humidity control in flowering

Phytium hater

Well-Known Member
Hi, in flowering the humidity should get lower , my problems is very difficult to do any proper defoliating..
the plants are huge and tight + the net is making it really a challenge to get anywhere near the plants...I cant fit in the tent and I can only approach the outer line of the plants from one side...so it wouldn't really make too much of a difference to pick the leaves only from them to manipulate humidity levels....there is super tight of leaves..
I have 2 fans 1 bottom 1 at top blowing opposite directions to circulate air..and exhaust fan and tube .+.fresh air inlet....
but the plants are like too tight..too bushy...too big....Humidity is like 87 %..there is Co2 bags...I might remove them to see if that would lower the humidity....been looking in to dehumidifiers but even the most quietest ones
are like around 46 dB and I would need 2 of them since there is 2 tents and they would cost like around 500 usd together..and they are using wopping 650w each...and I allready have so many heavy electrical equipment running all the time that even I pull extension cords to other rooms (done that too allready)...I am afraid that fuses
start popping and my electric usage would draw too much attention...
So I wonder could I manage by blowing oscillating fan air on the buds when the buds are starting to get larger to prevent mold ?
 

GrowinDad

Well-Known Member
My dehumidifier makes only a mild hmmmm in the background of my office. I work all day on a speaker phone with no issues and it keeps a 12'x20' office as low as I want. And there is even a mini humidifier running for the veg tent....
 

707humboldt

Well-Known Member
Dehumidifier is the only way your going to drop that humidity. Even if you did the lowers, the humidity would still be really high. I have 2 kenmore 70 pints in a 8k 12x20 that get full by the end, and they keep it where ever i want it. They really are not that loud, but they do pull 7 amps a piece.
 

Phytium hater

Well-Known Member
Hi, could both of you send the exact model description so I can google and see the exact specs etc.
The cheapest viable one I found where using 650 w. and making 46 dB...what is double of my 2 water chiller what make each only
20 dB and my 2 silent blowers make 19 dB...
 

Hotshot123

Well-Known Member
:hump:I had high RH on my last grow 90 in the dark, didn't effect the growing process at all, and no mold. :rolleyes: 4 4" fans running, 3 intake, and one exhaust.
 

Phytium hater

Well-Known Member
Cheers..guys ..we haven't had problems ether...dam internet I went and ordered 2 dehumidifiers online..have to go and pick them up
tomorrow...my main worry is the noise...whell I try them in the store..and if they are loud then I don't know...they where fair price
suck 10 liters of water in a day and are good up to 40 m3 size room,what is way more than my spaces...and together 245 usd.
So without risking at the end to spoil the whole crop in mold at least I'we got the gear...I am only going to use them at the last 3 weeks...
 

Phytium hater

Well-Known Member
Got the dehumidifiers and they look sweet and are whisper quiet...at least electric company will love me...just read a post of people
talking about humidity and that many get killer yields with higher humidity without any problems...Any thoughts on that guys ?
 

Cobnobuler

Well-Known Member
It largly depends on your growspace, and even the strains you are running. Some are more sensitive to mold issues moreso than others.
My growroom is in my old city basement and I have to be very diligent to keep mold away. For instance I dont LST or mainline anything at certain times of the year when humidity is up ( mostly summer)
because while them long fat banana buds sure are nice, they are the ones most susceptible to mold starting from the inside out.
Plenty of air movement and exchange of air is critical as well when you are concerned about mold. A carbon filter scrubber can also work to trap mold spores that may be flying through the air.
If you've ever experienced bud rot from mold, there's nothing more nasty.
 

Chester da Horse

Well-Known Member
i've got a quiet and useless dehumdifier. 16L/24hr capacity, 8L tank for 250W, but my cab never gets below 40%, rises to 60% at lights out.

But it 90%+ outside and I have inducted air intake.
 

SPLFreak808

Well-Known Member
Holy hell guys. Anything past 70% is fucked up. 90%!? Damn that is literally clouds and fog and unachievable at sea level.
 

Phytium hater

Well-Known Member
Well now at least I am prepared for everything...but I wont run the equipment until buds are developed a bit more...
 

70's natureboy

Well-Known Member
Got the dehumidifiers and they look sweet and are whisper quiet...at least electric company will love me...just read a post of people
talking about humidity and that many get killer yields with higher humidity without any problems...Any thoughts on that guys ?
What brand are they? I know it isn't Haier because those things are super loud.
 

GrowinDad

Well-Known Member
We got ours originally to run in a finished basement in the summer. Twas a necessity in WI. I would have to imagine that any of the ones at Home Depot for that purpose work fine. THey are desinged not to annoy you and take care of te excess moisture. Mushrooms in carpet suck!
 

Phytium hater

Well-Known Member
So the humidity now without the dehumidifiers is 82 % and plants look good, do you think that I can wait until the buds have formed
a bit more before I would need to start lower the humidity, the flowering is now 15 days.
And when using the dehumidifiers can I program them for like 60 % humidity...or is it necessary to go low as 40 %
I know the recommendation about the 40 % humidity for the end of flowering but it seems a bit overkill...
any thoughts on that...
 

Phytium hater

Well-Known Member
One more thing I wonder is that should I remove my Co2 bags for the end of flowering. That are they one cause of high humidity..
 
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