Hoped someone may have experience - just had our kitchen redone and while I was spending lots of cash I had the crew build me a curing room in a part of the basement. Nothing real fancy but enclosed with moisture/mold resistant drywall (greenboard) Size is approx 15' x 4' so 60 sq ft (18.25 meters). As you can see in the pic I'm running a crane ultrasonic humidifier. Had hoped the enclosed space would make it much easier to keep humidity in the 70's without constantly refilling. First few days that has not seemed to be the case. Humidity nearest the humidifier has gotten into the high 60's to low 70's - opposite side of the room low to mid 60's. So yesterday I picked up an 18 gallon (68 liters) bin, filled it with 80lbs of rock salt and then added water to make a slurry on a much larger scale. Too early to tell if I'll be able to hold 70's without the use of a humidifier.
Anyone have any thoughts? Anyone know or ever seen something on how much of a salt slurry you need in a given space to get humidity around 75%. I would love to just have to add some salt and water on occasion and do away with the humidifier all together.