I would try scrubbing with some iron out.  keep in mind that if the rust has been there too long, it may not come out easily. Of course always test first. If the rust is not on the surface you will need to use a poultice.

On Thu, May 3, 2018 at 9:08 AM, Anthony Godoy <agodoy4894@gmail.com> wrote:

Hi partners 

We have rust coming out of Coral . What can we use to remove it. The rust is spread out all over a large area

Anthony Godoy
Godoy Stoneworks and Tile Care
Www.godoystoneworks.com

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