Looking For Some Tricks To Lower RH

hellraizer30

hellraizer30

Rebel From The North
Im looking for some advanced ways to lower RH
Im exchanging large amounts of air to lower hum
And temp but I cant get better than 60% sometimes
65% and im in around week 5 bloom yah I know not
Good, im running a dehumidifier. Im looking for a way
Or method to lower this,

Setup is one input fan from outside and one going out
From a scrubber. One thing im thinking is a AC unit
Would running one to cool the air lower hum?
 
C

CrazyStone

Member
A/C might only slow mold, but mold can grow at around 2º C so if mold is what you are worrying about it would have to be cold/harmful to your plants.
Salt?
 
lince

lince

Well-Known Member
hellraizer30 said:
Good, im running a dehumidifier. Im looking for a way
Or method to lower this,
Click to expand...
Are you saying that you are running a dehumidifier and it doesn't lower your rh ?

If a dehumidifier doesn't work don't expect a bag of rice or silica gel to work any better.
 
hellraizer30

hellraizer30

Rebel From The North
Yah it not keeping up with the room, but the room is hot so back to the root of my
Question do ou think a ac unit to cool the room would drop hum? I dont want to
Spent money if the idea isnt sound
 
xXOnyxXx

xXOnyxXx

Well-Known Member
yea a a/c unit will pull the humidity out of your room, plus the temp drop won't hurt either!
 
xXOnyxXx

xXOnyxXx

Well-Known Member
yea kind of .. the water you see dripping out of a window unit is from the condenser pulling humidity out of the air.
 
U

unity

Well-Known Member
Something doesn't make sense here. What is the room size? At 700-800cfm extraction, depending on room size, you should be maintaining 'outside' rh levels. At this extraction rate the de-humidifier is not very effective. I question the 40% outside rh, are you sure? Ac for dehumidification is not a good choice for several reasons. Obviously dropping the temps will also drop rh.
If you go down the road of AC & dehumidifier you should consider reducing your extraction to the point where ac & dehumidifier become effective. Or, even better, start loking into a cge growing environment.
 
hellraizer30

hellraizer30

Rebel From The North
Yah it between 40 and 45 and room size is 550sqf with a 10x10 tent in it the in is strait in the main room
And the out comes from the scrubber in the tent to outside

Dehumidifier in the main room
Main room temp is 68f
In the tent is 78f to 82f and hum in the tent is right now is 60%
Im thinking its a waist to even run the dehum
 
U

unity

Well-Known Member
Just so we are on the same page: The tent takes its air from the surrounding room, the tent then exhausts the air from the tent to the outside of the building.
Where does the room that surrounds the tent get its ventilation air from? I'm trying to establish if your extraction fan can pull air freely, or if there is a performance drop due to excessive static pressure on the fans.
BTW, I don’t think that your fans pull more than 400cfm each at 8", in fact the extraction fan pulls less due to the scrubber. I would not be surprised if you had a bit of positive pressure in the tent. Anyhow, you cannot combine the two fans when you calculate total extraction cfm. The intake fan only aides the extraction fan in overcoming static pressure and in your case it probable provides more air then the extraction fan can pull due to the scrubber. It’s a long shoot, but added temps (higher rh), along with positive pressure might give you a rh increase like you are experiencing.
 
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