[quote="Needsdecaf"]
Oh Crap, the DME got the best of your insurance company with that machine...

Thanks for the replies. I'll start using distilled water.

Interestingly enough, I got my new machine yesterday, S8 Compact with the HumidAire 3i humidifier...

What does everyone use to clean their water tank? I use bottled water but still get some mineral buildup so I can clean it with water and vinegar. Just curious what others are doing...