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K+ Advanced Sinking Filter Media

Plastic media, for use in biological Pond filters – specifically in moving bed bio reactors, was pioneered by Evolution Aqua, some 20 years ago. In recent years, other plastic media have come onto the market, usually with the aim of trying to get more and more surface area. However, one drawback to using plastic media has always been the time it takes to establish a stable biofilm – essential for good filtration.

After many years of research, Evolution Aqua have now developed a new media that not only gives class leading surface area, but also overcomes the problem of long maturation times.


K+Media is designed and manufactured in the UK by Evolution Aqua. This advanced media, with its innovative design, and class leading surface area provides enhanced biological and mechanical filtration. As Evolution Aqua extrude the K+Media, Minerals and Enzymes are added to the raw material. The result of this process, unique to Evolution Aqua, is a filtration media that not only outperforms most of its competitors due to its large protected surface area, but also answers the problem of how to speed up the time taken to mature your filter.

All the benefits of K1… Plus:

Class leading total surface area 1350m2 per m3
Vast protected surface area 1025 m2 per m3
Filters mature faster with K+Media
Minerals, magnesium, calcium, salt and enzymes incorporated into each piece
during extrusion process
Design and structure of K+Media allows a stable bio-film to form
Microscopic organisms such as Rotifers and Vorticella spp. thrive in “quiet zones”
Exceptional solids removal thanks to efficient design
Reduced energy consumption, less back pressure on pumps
Available as sinking version in 50 litre bags through to 2.5m3 bulk bags