Re: Hard Water stains
But it works! Desperate times sometimes require desperate measures.
To the OP, if you look up cleaning bathrooms/showers you'll find lots of homemade fixes like this. Sometimes the bleach is optional, and you can try with just the bicarb as a thick paste and that might be enough. If it's really bad, you might throw all caution to the winds, put the fan on in your bathroom and try with the bleach, too.