They have mold/bacterial growth problems (and use more electricity). But both types have easy solutions to their respective problems: - Use distilled water in

They have mold/bacterial growth problems (and use more electricity). But both types have easy solutions to their respective problems: - Use distilled water in the ultrasonic. - Regularly clean/replace wick in your evaporative (or use a water stabilization agent). Even the article at the top says they measured "0" particles when distilled water was used. Until reading this thread I thought using distilled water in them was common knowledge. I believe that is what the manual with mine even said.