Evolution Aqua Kplus (K+) Filter Media is a impregnated plastic media, for use in biological pond filters - specifically in moving bed bio reactors as used in the Nexus filters as well as Bead and Aquarium filters. This new generation of media has been redesigned to give it an extremely high surface area of 1,350m² per m³ with a protected surface area of 1,025 m² per m³, but that's just the first improvement. As Evolution Aqua K+ Media is extruded, Minerals and Enzymes are added to the raw material, doing this adds the following benefits:

• The addition of these minerals creates a rough surface on the media. This textured surface has a microscopic honeycomb of peaks and craters that allow waste particles to collect, and nitrifying bacteria to form.
• The minerals act as a food source for the bacteria, helping the bacteria to develop and multiply at a faster rate, further improving maturation times.
• Calcium alone has proven advantages for developing and maintaining effective bio-films.
• The enzymes that are added also help to make the media “sticky” so waste particles can adhere to media easier.
• Salt is added during the extrusion process, which is dissolved during the cooling process, leaving a rough surface on which bio-film can easily adhere.

How Evolution Aqua Kplus (K+) Filter Media works
Maturing of the Evolution Aqua Kplus (K+) Filter Media is important because a delicate eco-system is naturally developing for the bacteria involved in the nitrification process. Evolution Aqua Kplus (K+) Filter Media provides the maximum active surface area for the bacteria to colonise, more than other types of static media. It is this process which removes harmful ammonia and nitrite from the water. Due to the Minerals and Enzymes which are added during the manufacturing process, this critical maturing process is significantly accelerated, ensuring your filter biological capacity is established as quickly as possible.

The shape of Kplus (K+) optimises the amount of “quiet zones” within the media where a stable bio-film can develop. Whilst K+ Media keeps the integral profile of K1 Media at its core, there is an extra layer of cells and fins around the outside of each piece that enable microscopic organisms such as Rotifers and Vorticella to thrive. This is an additional benefit as competitor media do not have such “quiet zones” that would allow these higher life forms of filter feeders to develop. The bacteria and organisms that form within the bio-film ensure the media delivers optimum levels of biological filtration in the moving bed, which has been proven filtration technology for many years in the fish keeping hobby.

How is Evolution Aqua K Medias different to other media
As the Evolution Aqua K Medias moves within the filter, it causes the old dead bacteria on the outside to be displaced. This makes space for new younger heavier feeding bacteria to rapidly colonise. Within the wheel is a protected surface which enables colonies of bacteria to naturally follow their life cycle, of maturing, dying and then fuelling the latter stages of the nitrification cycle. K1 media has been designed to provide the best possible habitat for both young and mature beneficial bacterial colonies.

What is meant by - self cleaning
Unlike foam, matting, or other forms of static filtration media, the Evolution Aqua Kplus (K+) Filter Media is designed to move freely within your filter. The constant chaotic movement of the air from your pump, causes the media to self clean and thus requires no maintenance. This allows the filter to reach optimum effectiveness without the disturbance of periodic cleaning, avoiding unnecessary loss of bacteria within the filter.

Evolution Aqua - Kplus (K+) Filter Media - 50 Litre Bag Specification
Length: 8mm
Diameter: 10.2mm
Surface Area: 1350m² per m³
Protected Surface Area: 1025m² per m³
Volume: 50 Litres