FIG. 1 is a top plan view of a calcium hypochlorite tablet showing our new design; FIG. 2 is a bottom view thereof; FIG. 3 is a right side view thereof; FIG. 4 is a left side view thereof; FIG. 5 is a front side view thereof; FIG. 6 is a rear side view thereof; and, FIG. 7 is an upper right front perspective view thereof.