I did about 400 sf of 12 in ceramic tile and grout 2 days ago .. by the time I was done, about half of it looked dry .. (used a carpet fan) the grout went from black to tan.. looked pretty good .. then I sealed it with Stonetech heavy duty sealer .. some areas puddled due to the uneven floor.. I get a call the next day .. client says grout looks eneven and blotchy lookin .. tan and bleached white lookin..I go there today and yep alot of the areas are white even the same grout line within 12 in has a white ,tan,white .. Im thinking maybe too much sealer.. is there a quick fix? thanks to anyone who can help.