DEHUMIDIFIERS - Advise needed....

NorthofEngland

Well-Known Member
I'm on my 3rd day of flower. The last few weeks of veg the RH was pretty low (30-50%) so, during the last 3 days of VEG, I thought I would get the RH right UP.
And I sprayed until it was up in the 90's.
Now I'm on 12/12, it's a cold time of year and 12 hours darkness can cause cold - so I slowed down the fan speed, a lot.

During the 12 hours of light I turn it back up, PLUS I have two oscillating fans moving the air around and stirring up the plants.

BUT THE HUMIDITY IS STAYING IN THE 70'S.

What type of dehumidifier would be best for a 4 x 4 or an 8 x 4 tent?
(I'm flowering in my 4 x 4 but I have a 8 x 4 ready for next crop).
All the ones I have seen would be too big to fit in a tent - they are more for dehumidifying entire buildings.

All help appreciated.
 

GrowinDad

Well-Known Member
If you are runnng decent exhaust, you don't want it in the tent. Get one suitable for the room the tent sits in and bring down the whole room, thus the air coming in. Even with fan down you are prob clearing the air out of the tent too fast for a dehumidifier.
 

ScoobyDoobyDoo

Well-Known Member
you're gonna lose some space but a little 30 pint dehumidifier will do the trick. they are about a square foot in size. i used one when i had 2 tents going. make sure you get one with drain to waste. then you can hook up a hose to it and drain it to a sink or toilet. if you don't have one nearby then they usually fit perfectly on top of a 5 gallon bucket and you can drain it right into that. you'll just have to empty the bucket every 1-2 days. draining to the pan on the dehumidifier is a pain cause you have to empty it 3 times a day. look at the danby or delonghi models. they are the best.
 

Nutes and Nugs

Well-Known Member
Just chill out a few days and don't spray them again.

All the water you sprayed on them won't magically disappear overnight.
 

ghb

Well-Known Member
give them less water more often, ensure you have good air circulation and exchange and last but not least ensure the temperatures are pretty stable between lights on and off. usually within the first hour of lights out the humidty will skyrocket as the plants continue to wick off water, if the temp drops rapidly this can leave condensation on your plants, the equipment and your grow room walls.

i used to use dehumidifiers but i realised that it simply isn't needed in my situation, for the power consumed by the machine i could have another light which would increase my yield more than any other piece of equipment i could buy.
 
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