Filter cleaner JOKER - 5L, allows to clean effectively the sand filter of your swimming pool. Be sure to follow the instructions for use before use. Advantages: One product for cleaning the filter Take care to respect the instructions for use Characteristics: Filter cleaner, special sand filter 1 cleaning per year Cleans, descales and dissolves Packaging: 5L bottle Packaging: Delivered in its packaging Caution: Use pool care products with care. Before use, read the label and product information.