Hey Pro's we just finished 2 weeks ago 4000sqft of brushed Black Stone. A new install. We used a 20" purple nylon bristled brush to remove all the discoloration, grout Haze and crud. Power washed and sealed with porous plus.
All looks good so far except for around the hot tub. It not a salt water pool. Any way to prevent this???

Tony DeLuna
925-625-9625
www.PatriotStoneRestoration.com