What size dehumidifier and intake/outtake fans do you have? I have a 260 watt dehumidifier that I use for early flower in my 9x5x7 tent which is just enough to keep rh at 58% lights on and 45% lights off with 10 inch in take and out take fans which are probably bigger than I need. Once I'm in late flower I gotta use a 650 watt dehumidifier which will keep me at rh 55% lights on and 45% lights off. My dehumidifiers are in my tent and they only bring down the rh by 10-15% max so I feel like the intake/outtake fans are doing most of the dehumidifying and maybe it is better to have your dehumidifier out of your tent I'll have to give it a shot.
I have a 5x5 tent too but I use it for my veg plants so I don't need a dehumidifier but if I ever used it for flowering my 260 watt dehumidifier should be enough with 6 inch in take fan and 8 inch out take with carbon filter running full power.
60% rh isn't too high during flower but you want every square inch of that canopy to be getting good airflow.
Yep I’m run a 6” exhaust with 2x bottom flaps 100% open, at the moment my dehu is off and I’m running humidifiers cus I have seedlings in there now, I took the stand off my 16” oscillating fan and mounted it to the ceiling of my tent and have 2x stationary 6” fans blowing in different directions.
I have one of the small dehumidifiers too but I use it in my drying box 4’x4’x3’ high and it just keeps the RH in check in the tent, it dosent ado anything for my grow tent when I tried it in there though
This is the 50 pint I use, it’ll drop my whole basement from 65%RH to 35%RH in a few hours but like I said it’ll also raise the ambient temp up 6-7f initially but once it’s been running for a few days it evens out at around 3-4F. I’m glad we’re going into fall once we hit winter the RH should be much less of a worry as well as temps. We run a wood stove for heat upstairs and we don’t actively heat the basement it stays around 60f it’d be great to be growing a purple strain id defenitly get the good 15f temp swing to really bring out the color lol
I was wondering if i shud lower intake and exhasut during dark tile while leaving the oscilating fan on and running the dehumidifier to try and get the humidity down during that period. Not too worried during light on time. Its running around 80 degrees and 59% right now. More worried about mold when the lights are off.
Increased airflow would be better than less, you want maximum air exchange when RH is high you want pull that humid air out of the tent and exchange it with drier air from the lung room I’d bump the exhaust up a bit more at night and see if that helps
