cef4093 ...
The advantage of the soap dish humidifier is that it ISN'T the same size ... it's bigger ... and because it's bigger, it will hold more distilled water or 50/50 mix ... because it has a higher capacity, it requires less maintenance AND gives you some assurance that it will hold the desired 70 humidity level more readily ...
As a point of clear fact, the purpose of PG (the other 50 besides the distilled water in a 50/50 mix) is to serve as a sort of pacemaker for the rate at which the water half evaporates ...
I know ... you're thinking "well, this unit came with the humidor, so it must be the one the humidor is supposed to have to work right" ... actually (e-Chick says I say actually a lot ... do I?), the humidfier that came with your humidor was either cheap or decorative for them to include, but not necessarily one that will provide optimum function ... I'll grant you, it LOOKS good, sorta like the analog hygrometer, but for serious functionality, bag that humidifier and go with a soap dish ...