The ornamental design for a floatingpool and spachlorinator, as shown and described.
FIG. 1 is a top perspective view of the floating pool and spa chlorinator showing my new design;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is an exploded top perspective view thereof; and,
FIG. 7 is an environmental view thereof, the broken lines indicate a waterline for the floating pool and spa chlorinator and are not part of the claimed design.