Mix 1 & 1/2 cup muriatic acid and 3/4 cup hydrogen peroxide in a plastic tupper ware container. My board size was equal to 4 in. times 8 in. Time
around. 30 min. My question is I do not know the strength of the Crown version
of the muriatic acid. Is this time normal and is there a way to speed up the time the board is in the tray?