Posted 5/21/2020 21:01 (#8272360 - in reply to #8256932) Subject: RE: hard water stains/marks
Wisconsin
If it's soap scum, then use easy off oven cleaner "NO FUME" in the blue can. It will dissolve whatever is in the scum that holds it together and repels acids. If it's just hard water deposit, then acid will work fine, but I've never seen hard water deposit without soap scum in a shower.
hard water stains/marks
