My comment is as follows.

Take the humidifier back for a refund. Fill a glass with water and place it the area.

Clones get their intial boost towards recovery from being misted...ez-cloners spray...stubby lil cutlings that have nothing as significant as foliar absorbtion happening until a root development process begins.

Cloning is a simple thing. The procedure for nursing cutlings till they root should be kept simple too.

I've conducted side by side trials with clones. High humidity above 90% and lower toward 40%...I noticed no difference in the recovery rate and or the timing of when roots appeared. I went so far as to neglect a clone, to see how far into wilt it could go before I began nursing it back to health. It's roots developed just 3 days after ones I had consistently misted.

I've varied conditions from one extreme to another enough now to determine (at least till I see otherwise) that a succesful clone is dependent on favourable genetics, an asap application of non-processed sugars that it will store and use to get root development, and at least one misting a day in order to prevent severe wilting.

But to answer your question...any clone is only going to be able to absorb and utilize as much moisture as it can. If it can only absorb .005 ml of water in a day, .00005 ml at a time...why surround it with a gallon?

Somewhere in between 65-80% is a place where clones are comfortably utilizing available humidity for staying as hydrated as they can at a near constant, minute rate as they need it.

But then again, I've seen lower toward 40% work too. Just slower.