Thank you Stu and John for the feed back. I was looking up prosco masonry cleaner and noticed a few options any specific one John?
Thank you

Sent from my iPhone

> On Jun 11, 2016, at 7:29 AM, John Freitag <jfreitag@thestoneandtileschool.com> wrote:
>
> Your going to need to use an acid based cleaner. I would recommend Prosco Masonry Clea
> John E Freitag
>
> John E Freitag
> Owner/Director
> The Stone & Tile School
> Office 407-567-7680
> Cell 407-615-0134
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> www.thestoneandtileschool.com
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> ner  600 dilute more than recommended , be sure to wear safety glasses and rubber gloves. Apply with a sponge do not spray.
> Allow dwell time with a scraper , then brush vac rinse , this will probably take two applications , after the acid then clean with a neutral cleaner to neutralize the surface. This will work on the porcelain and the slate. If the slate need  more attention you can use a honing powder or honing pad to remove the remainder and give a new honed surface to the slate. When completed seal with an impregnating sealer or to enhance the color use a color enhancing sealer , solvent based.
>
>
>
> -----Original Message-----
> From: list-manager@stoneandtilepros.simplelists.com [mailto:list-manager@stoneandtilepros.simplelists.com] On Behalf Of Justin Cameron
> Sent: Friday, June 10, 2016 7:22 PM
> To: Stone Tile Pros
> Subject: Slate and porcelain
>
> Wanting some suggestions on restoring this water feature in a spa. 🙀😬. The walls are porcelain and the bottom ledge is slate. All are really bad hard water damage wondering best way to restore or is it waste of time.
> Thanks
> Justin
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