Strong, like 50/50 or stronger, and let it sit a long time. 


On 1 Sep 2016, at 12:59 am, Steve <steve@potomacstonecare.com> wrote:

Will do. Thanks a lot.

Sent from my iPhone

On Aug 31, 2016, at 9:45 AM, Pat Staples <cpstaples@msn.com> wrote:

Try bleach, that usually works



Happy Connecting. Sent from my Sprint Samsung Galaxy S® 5


-------- Original message --------
From: Steve <steve@potomacstonecare.com> 
Date: 08/31/2016 9:39 AM (GMT-05:00) 
To: sccpartners@stoneandtilepros.simplelists.com 
Subject: Sandstone with green staining from trees 

Hello. -- anyone know what I might be able to use to try and get rid of these stains from the trees. I tried grinding and muriatic  acid but neither worked. Any help would be much appreciated. Thanks, Steve

 
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