How to adjust humidity

Hi guys, my closet grow has been going great and I have noticed the Humidity starting to drop in the closet, note that there is no extraction/intake but there is a small amount of ventilation.

Currently the humidity level is at 38% and temperature is around 25-30degrees on average when lights are on and maybe 18-24degrees when lights are off. I am worried this humidity is too low, does anyone have the exact humidity range that I need to keep the room in? I have a fan in the room which I haven't started using yet as the seedlings are in very early stages and I don't want to screw anything up at this stage.

Basically I just need to know the correct humidity range the room needs to be kept and and a way to increase or decrease the humidity! Thanks heaps guys

well, the thing is, the plants like it to be above 70% rh, but thats prime conditions for spores, mold , fungus, pm.... so anything under 50% is usually a good compromise, the plants want more, but they won't rot alive....
the easiest way to raise the humidity is a cool mist humidifier. make sure you get one that doesn't need a filter, nothing really wrong with the ones that do, but you have to keep buying them, as they use the filter as the medium for the water to evaporate from. and add a couple of drops of bleach when you fill them, i just put ro water in mine at first and it turned into a fungus gnat hotel,. if you hook one to a timer, and watch your rh meter, you can figure out how much you need to run it per day. usually more when the lights and fans are on and much less after lights out

Electrum said:

Hi guys, my closet grow has been going great and I have noticed the Humidity starting to drop in the closet, note that there is no extraction/intake but there is a small amount of ventilation.

Currently the humidity level is at 38% and temperature is around 25-30degrees on average when lights are on and maybe 18-24degrees when lights are off. I am worried this humidity is too low, does anyone have the exact humidity range that I need to keep the room in? I have a fan in the room which I haven't started using yet as the seedlings are in very early stages and I don't want to screw anything up at this stage.

Basically I just need to know the correct humidity range the room needs to be kept and and a way to increase or decrease the humidity! Thanks heaps guys

Click to expand...

During veg I don't worry about humidity. I have ran as high as 62% no problems. During flower I use a dehumidifier and keep it below 50%. I like to be right around 40%.

i run about 70 in veg, the plants eat it up, and would run a dehuie if i needed it during flower, but i have the opposite problem, same as the op seems to have, too much air moving through to keep it between 40 and 50%. too much humidity during flower is asking for botrytis, but too little is going to cause problems as well, i highly recommend staying between 40 and 50%

Alright thanks for the great comments guys I have this which is like a water vaporiser (meant to have scents put into it to make the house smell good) but I was thinking I could use this to raise humidity, the only problem I was thinking could occur is my LED fan sucking in the mist, but where I'm at now with 40-50% humidity is fine for me then and I'm sure it will go up when the plants start growing and I water them more