Replace every 3 months, depending on frequency of use. The small brush makes it easier to clean the corners and corners of the filter. 60 aqua rh9680wo, ,x-force 8.60 animal (Rh9677wo,x-force 8.60 animal (Rh9677wo,x-force 8.60 animal (Rh9677wo) Reference: 9678. ).
