I recently laid some hymalayan sand (http://maplered.com) Stone (http://g603.net) Tiles (http://www.g682.net) with a honed finish.Without sealing the Tiles (http://www.g682.net) I then grouted the gaps using 3 parts fine sand (http://maplered.com) and (http://maplered.com) 1.5 parts ivory cement. The problem now is that the grout has stained the Tiles (http://www.g682.net) and (http://maplered.com) they now look blotchy. The day after I grouted I tried to remove the stains with phosperic acic, hydrocloric acid, white vineagar and (http://maplered.com) liquid chorine with no success. If I were to get someone in to re-hone the surface would that get rid of the stains? Alternatively do you have any advice. Thanks Jeff