Cleaning Salt / Calium off flagstone

[atxjmy512]

How would I go about cleaning this salt / calcium off my flagstone? This is one stone that’s part of my waterfall. I’ve read some about diluting muriatic acid but am unsure about the mix ratio and don’t want to ruin the appearance of the stone. Thoughts?

 

[ajw22]

Waterline Scale Removal - Further Reading

www.troublefreepool.com

SR3 Pool&Spa Scale Remover can be used to soften light scale. SR3 is a mild acid in a gel that will stick to walls. Removing the scale will still require elbow grease and multiple applications.

See Melting Waterline Scale away... using Bar Keepers Friend as a paste

Bar Keepers Friend has a bunch of different products. The powdered cleanser is what is used to make the paste.