Humidity too high?
- Thread starter tav
- Start date
A lttle bit high, but probably OK in veg. You'll want it lower (30-40%) in flower.
Nunyabiz
Well-Known Member
Depends on your temp.
If temp in veg is 82-84-ish then 70% is perfect.
If temp is 75⁰ then 70% is a little high.
And yes once you start seeing white hairs start bringing down the humidity by 5% per week until harvest, you want to be in the 30s by final week
If temp in veg is 82-84-ish then 70% is perfect.
If temp is 75⁰ then 70% is a little high.
And yes once you start seeing white hairs start bringing down the humidity by 5% per week until harvest, you want to be in the 30s by final week
Most likely the humidity was lower in the cubby because it had better ventilation allowing the moist air to escape.
Most grow tents are a bit air tight. If you think that you will have to lower the humidity then consider opening one or more of any vent holes. One near the top and one at the bottom if the tent has them. Another option is to open the door when the lights on period starts and close it back up at lights off.
The OP also doesn't mention if he is using an exhaust fan, which would help, almost necessary in most tents.
OP has posted several Qs in various threads
@tav put all your questions in one thread so we get a better idea of your setup
Yes, had noticed that.
But, I use the open tent door which works in my situation. The fan on the carbon filter used to exhaust to the grow room but it could not keep up with the excess heat and humidity when all the tent lights were on at the same time and the plants were contributing to the tent's humidity levels. So the open door and the filter now exhausts scrubbed air back into the tent.
it's harder to control humidity if you don't exhaust to outdoor. one to two plants in a 2x2 won't necessarily need dedicated outdoor exhaust depending on local climate, but anything larger begins to require it. if you have a normally warm or humid climate, you'll probably need outdoor exhaust even on the 2x2.
Sativa1970
Well-Known Member
Bigger the plant the more perspiration so the RH is only going to go up. RH is moisture measured in relation to temp. Raising temp 1 deg will drop "relative" humidity roughly 2 points. Has the temp changed?
RH and temp are also strain determined. Christmas tree (cool dry) would not grow well next to Jamaican(hot humid).
RH and temp are also strain determined. Christmas tree (cool dry) would not grow well next to Jamaican(hot humid).
