mechanical foam

Remanoid's Aquafresh filters use the time honoured system of trickle bar, mechanical foam of various densities from fine to coarse, and their own Flocor type plastic media.

Chemical foam is considered obsolete in the United States and has been replaced by synthetic mechanical foams, such as AFFF which have a longer shelf life, are more effective, and more versatile, although some countries such as Japan and India continue to use it.