DESCRIZIONE
A filter device (2), in particular for fish ponds or swimming pools, has a housing (4), which encloses a filter chamber (6), and a bearing element which is held movably in the filter chamber (6) and through which the water to be cleaned can flow from a dirty water region (24) to a clean water region (34), on which bearing element a filter belt (16) which is guided from a dispensing roller (18) to a filter belt receiving means can be placed with the formation of an active filter area (22), wherein the filter belt (16) can be driven, for the periodic supplying of the active filter area (22) with unused filter belt (16), by a water wheel (42) which is arranged outside the filter chamber (6) and the blades (40) of which can be loaded by uncleaned dirty water (SW) which exits the filter chamber (6), in order to generate a turning moment (D). It is provided here that the filter belt (16) can be placed in the gravitation direction (G) from above onto the bearing element over the entire active filter area (22).