Humidity problems in flower

DrgreenthumbNZ

DrgreenthumbNZ

Member
Hey there.
So basically ive got a homebox 120 tent with lumatek 600watt digital light setup,125mm can fan connected to a fan controller and external thermostat.im exausting heat out the top of the tent up into the ceiling through a canlite carbon filter and drawing fresh air in through two lower passive intakes.my daytime temps sit at about 23-24° when lights are on (11pm-11am)
night time is dropping to around 18-22° because its summer here(11am-11pm).

THE PROBLEM....when i go out to check my plants at 9am in the morning i unzip the tent and theres literally water running down the walls and my humidity meter readys HH (im guessing means fucking High Humidity lol)
When my fan kicks in the humidity seems to drop but because my temperatures range from 18-24 i cant tune the fan to stay on all the time at a balanced temperature.even with fan speed controller on absolute minimum my lights on temperature slowly keeps dropping.obvious fix would be a dehumidifier but i was thinking....if i put a small oil column heater in there and thermostat it set to come on when temps drop below say 22 and have my fan thermostat set to 24 or something like that do you think i could make it so i get better day night temp.consistancy AND help my fan kick in more often therefore replacing the air more often and lowering the humidity?also this would help with managing winter temps when i get to it?
 
cannabisdreams

cannabisdreams

Well-Known Member
Let the fans keep running at night. Just have the light on the timer. that will lower the humidity. Are your plants showing any signs of issues? Might not be a problem. What are you room temps? Your tent temps seem really low.
 
DrgreenthumbNZ

DrgreenthumbNZ

Member
Lights on temp 23-24°
Dark period temp 18-20°
Basically my temps seem to be algood its just the humidity issue.i wish i could run my exaust fan 24/7 but then it drops my lights on temps way to low let alone my temps when the light goes off.and thats with a small 125mm fan on a speed controller basically turned right down.so thats why ive got the thermostat so when my lights heat the tent temperature to 25 the fan clicks on and cools the tent to about 22 then clicks on and the tent heats up to click the fan on again.then during lights off only the oscillating fan runs and if the garage heats above 22 the exaust clicks on and cools it down again.i cant run the exaust 24/7 or my night time temp would drop below 15°
Oh and na plants look healthy as
 
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cannabisdreams

cannabisdreams

Well-Known Member
I'm probably the wrong person to help out with this since I tend to operate at the warmer end of things, around 27-28 during the day and my night time temps around 23C. I grow in soil, I'm guessing all this moisture is coming from a hydro setup? I would let the plants be my guide, if they look happy, I'm happy.
 
DrgreenthumbNZ

DrgreenthumbNZ

Member
Hey cannabisdreams.
Na its a soil setup aswell.i think ive just figured out a solution.i rummaged through my bits and bobs and found a 17watt axial fan so ive added that into my exaust ducting.gonna run that 24/7 and see if it clears out some of the humidity without lowering my temps.im keeping the can fan connected to the thermostat so if my temps go above 26 then itll kick in and cool them.cheers for the input bud!
 
GOLDBERG71

GOLDBERG71

Well-Known Member
I only scanned your post. But condensation building up on the walls is BAD. ESPECIALLY IN FLOWER. First off it leads to disease. In flower it will lead to BUD ROT. Read up on environment warmer temps hold more water. If that air cools condensation forms because cooler air can't retain the water.

You need to control it or you'll pay in the end. Get a dehumidifier set it to 50% then adjust your cooling/ventilating to maintain temps as normal. In this balancing act if you've got to give on temp to reduce humidity that's what ya gotta do.
 
Lordhooha

Lordhooha

Well-Known Member
DrgreenthumbNZ said:
Lights on temp 23-24°
Dark period temp 18-20°
Basically my temps seem to be algood its just the humidity issue.i wish i could run my exaust fan 24/7 but then it drops my lights on temps way to low let alone my temps when the light goes off.and thats with a small 125mm fan on a speed controller basically turned right down.so thats why ive got the thermostat so when my lights heat the tent temperature to 25 the fan clicks on and cools the tent to about 22 then clicks on and the tent heats up to click the fan on again.then during lights off only the oscillating fan runs and if the garage heats above 22 the exaust clicks on and cools it down again.i cant run the exaust 24/7 or my night time temp would drop below 15°
Oh and na plants look healthy as
Click to expand...
Is your grow located indoors like your house? Just wondering as it shouldn't drop to much more. That sort of moisture will turn all your hard work into junk.
 
DrgreenthumbNZ

DrgreenthumbNZ

Member
Lordhooha said:
Is your grow located indoors like your house? Just wondering as it shouldn't drop to much more. That sort of moisture will turn all your hard work into junk.
Click to expand...
Na its in my garage so gets really cold at night and during the day gets really hot (sun all day faceing garage door = oven lol)
 
DrgreenthumbNZ

DrgreenthumbNZ

Member
Ill know tonight after work if ive solved the problem.unfortunately my temp/humidity gauge is INSIDE the tent so cpuldnt check it before work.gonna go buy a wireless one tommorow so i know whats going on during lights off
 
GOLDBERG71

GOLDBERG71

Well-Known Member
When in cold areas DH help in more ways than one. They're also a source of heat. Blowing that heat on the concrete floor might be a good idea.
 
Chunky Stool

Chunky Stool

Well-Known Member
If your garage is unfinished, you'd be better off putting a small dehumidifier in a tent. If it's a finished garage, a dehumidifier is nice to have even if you didn't grow.
 
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