Although very cute you can't use the ultrasonic as I originally thought. The ultrasonic disperses mist into the air thereby humidifing the air once evaporated. I thought it would work better but what it does is just get everything wet. Sorry to those that took my advice on that. You need the standard cool mist that blows air onto the water. As long as the mist is invisible it'll work. I'll post pics of the new setup soon.
Sorry to resurrect this, but afraid the meaning might be lost as this was said so well. I've always used "cool mist
ultrasonic humidifiers which put out prodigious amounts of fog (see below). But seeing fog and knowing one is humidifying one's cave are two different things, it seems? On the other hand, if you look at the later pics below (I think is Paccard in France), clearly, they're blowing fog over their cheeses and as they're considered one of the planet's best affineurs, you'd be right if you were thinking I want to "steal their mind" as they say in Japanese training. I think I discarded the use of the evaporative wick, "cool mist" varieties, because I thought I read somewhere, or many places, they're terribly inefficient. Not very powerful? But again, bit lost and would simply like to capture what is working for commercial, fine affineurs.
So, anyone with thoughts on this? US v. Evaporative wick cool mist for high (95-98% RH) caves?