Nov 24, 2009 #1 tmdry Member Joined Apr 7, 2008 Messages 2,508 Location DC Name Bill Martins Same thing happened to me when we scrubbed w/ grout bush, got black sand over ceramic. Told owner bad grout mixing too much water.
Same thing happened to me when we scrubbed w/ grout bush, got black sand over ceramic. Told owner bad grout mixing too much water.
