mid way along the trailing edge of cleaner 14 but protrudes therefrom as also shown in fig2 in these embodiments float 10 is partially contained within body 18 yet extends outside the body 18 too if desired further any or all of body 18 may be made transparent or translucent so that float 10 may be visible regardless of whether it is partly or wholly contained within the body 18 fig3 shows in a block diagram components of an exemplary water circulation system 42 system 42 may include swimming pool 46 wholly or partly filled with water pump 50 and piping 54 connecting the two if present automatic pool cleaner 14 may connect to piping 54 as well via hoses 56 or other means valves fittings 57 filter 58 and other items or objects optionally may form part of system 42 too an indicator of information concerning the temperature or pressure of pool water flowing through system 42 may be included as desired anywhere within the system 42 as a non limiting example of such an alternative placement any of the hoses 56 used to connect cleaner 14 to piping 54 could be adapted to change color or some other characteristic as a function of water temperature or pressure those skilled in the art will recognize that as depicted system 42 is constructed for use with a pressure side cleaner 14 although it may be modified as appropriate for use with a suction side of other cleaner 14.