Connoisseurus Rex
Well-Known Member
I'm no expert but Id say at 50 you have to add less moisture to the air/grow room to get a 1% increase than you would at 70? But at 70 the air can hold more moisture so it should be easier to raise the humidity? And I'm guessing it's the same princable for lowering humidity?
Don't forget, water is liquid state. Humidity is vapor form. Just because there's more water, doesn't mean there's more vapor by volume.