Japanese Matting, probably, in most peoples opinion, one of the best of all the filtration media which is available in the UK today .
Japanese Matting is extremely inert and easy to service.
Due to its coarse nature Japanese matting (sometimes called jap mat) has excellent bio-mass retention and its open texture removes larger particles from the pond water.
It is a very efficient mechanical and biological filtration media which is long lasting and durable, especially when compared with other foam media on the market, which is flimsy in comparison.
Japanese Matting is available in sheet form and can be cut to the desired sizes to fit your filter chamber.
Be careful when cutting wear protective glasses and watch those fingers.