1/ We advise against the use of any other special fluid for humidifiers such as the Propylene Glycol. This would damage the physical principles of the CREDO regulator. And cancel the manufacturers garanty.
2/ Do not leave your CREDO regulator dry out (see the chapter: “How to use the ONYX humidity regulator”). If you don’t use your cigar humidor for a period of time, wrap properly your regulator in a plastic bag. By leaving the Credos for weeks or months in the outside dry air, all the distilled water will evaporate and the foam will «cook», obstructing all the pores.
The CREDO regulator, like the cigars, needs to be kept in moisture The Credo self regulating humidifier, is a precise instrument and it needs to be used following strictly the instructions.