Wife bought me a new desktop humi for x-mas. Around 7 am I wiped the new humi down with some distilled water and filled the pack. About 12 hours later I went to re wipe the humi and I saw very small dots on the inside bottom. I took it to my local shop and they said its not mold, it won't wipe off. But when I did try to wipe it, it left smear marks. Anybody ever hear or experience something like this or know what it may be.