I bought this nice cooler a month ago, where you pour in water and it blows out (slightly) cool air.
Yesterday I opened the filter for cleaning and poked inside the water compartment, and I saw what I figured to be hard water deposits. Mind you, I've never met hard water deposits before. They're whitish yellow, disgusting and can be scraped off with a little effort.
Now they're all over the machinery where the water used to be, and some of it even dripped onto the outside on closer look. How do I get rid of them? More importantly, at $1 a gallon-bottle, air cooling is going to get really expensive.