I have been having a problem with my humidor. I have an oshkosh passive humidifyer and a digital hygrometer. I had been using a 50/50 solution in the humidifyer refilling with 100% distilled water on depletion. I haven't moved the humidor, but about 3 months ago I went to refill the humidifyer and I noticed a drop in humidity after refilling. I would check once a week and the humidity kept dropping until it reached about 45%. I removed the cigars and the appliances and checked for warping and cracking, but couldn't find any. I decided to recharge the humidor and placed a shot glass of distilled water in it and left it for a week. Checking a week later I found the water gone and the humidity around 50%. I have now placed a rather large cup of distilled water in the humidor and the humidity seems to have started to climb albeit rather slowly.

My question is does anyone out there have any idea how such a sustained loss of humidity could have occured. I don't smoke that much, maybe one or two every other week, so I can't see how there was a loss.

Any help or advice would be greatly appreciated.