Epic Pond Kalnes K1 Biological Filter Media is engineered in a wheel shape and is slightly positively buoyant, allowing a small amount of water flow to circulate the media throughout the vessel. How it Works Maturing the Kaldnes biomedia is important because a delicate ecosystem is naturally developing for the bacteria involved in the nitrification process. Fish are required to generate waste which the bacteria survive on. The bacteria colonise the new media without the need for additional chemicals. When established, your Kaldnes should be brown in colour. Nitrification Process Oxygen and food (fish waste) gives the bacteria the means to grow, whilst the Kaldnes media provides 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. As the Kaldnes media chaotically circulates within the Nexus, it causes old dead bacteria on the outside, to be removed making space for new younger heavier feeding bacteria to colonise. Within the wheel, is a protected surface, which enables colonies of bacteria to naturally follow their life cycle, maturing and dying, in turn fuelling the latter stages of the nitrification conversion process. It also assists in the breakdown of any small particles passing through from the mechanical stage. Therefore, the Kaldnes media provides the correct mix of both young and mature beneficial colonies providing a more consistent filter performance, whilst improving water quality, encouraging healthier Koi and aiding in reducing green water and blanket weed.
The maturing process needs monitoring closely to ensure that levels of pH, ammonia and nitrate are within acceptable parameters for your fish. Usually after a period of between 6-20 weeks the beneficial bacteria will have colonized the media to a satisfactory level to deal with the waste produced by your Koi. This period may extend depending on local water condition, temperature and stocking density.
Due to chaotic movement of the Kaldnes K1 media, the process is self-cleaning and requires no maintenance. This allows the filter to reach optimum effectiveness without the disturbance of periodic maintenance, avoiding unnecessary loss of bacteria within the filter preventing high levels of ammonia and nitrite within the water.