Filter Foam can be used as mechanical and/or a biological filter media. Its tight structure and high surface area makes it ideal for both. It successfully traps debris and also allows the colonisation of beneficial bacteria. Filter foam should therefore only ever be cleaned in a fish tank water unless it is only ever used as a mechanical filter media.
Filter Foams come in a number of shapes and sizes from a vast ranges of manufacturers and At Swell UK we are able to offer a great range of filter foam at superb prices!