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Influence of PP treatment on filter performance

A comprehensive study was conducted by Jasper Kuijper and Jan Stienstra on the use of Potassium Permanganate to treat filter media. The results are by now generally accepted throughout the aquaculture world. In essence, when filter material is treated with 6 g Potassium Permanganate per 180 litres of water, the surface area of the media is sterilized from harmful substances and the mould inhibitors on the media are removed. The main advantage is also that the Potassium treatment “prepares” the surface area of the media to facilitate faster biofilm maturity. The fact that this “preparation” of the media caused bitter arguments amongst the koi fraternity is now beside the point. What really fascinated me is some of the other findings that at first glance just did not make sense. The finding I am referring to is the positive impact of a Potassium Permanganate treatment on filter performance.

Last Updated on Friday, 25 March 2011 23:03


Bacteria, the ultimate survivors!


Most bacteria are less than 1mm in length. Therefore hundreds of thousands of bacteria can fit into a space the size of the full stop at the end of a sentence. On the other hand, colonies of bacteria can easily be viewed without a microscope. Bacteria have been designed to be adaptable. Their surrounding layers and the genetic information for these are capable of alteration. Some alterations are reversible, disappearing when the particular pressure is lifted (Therefore “old “drugs are all of a sudden effective again).

Last Updated on Tuesday, 30 November 2010 10:30


Bacterial Infections

Bacteria come in many different shapes and sizes. They are microscopic in size and unlike parasites, cannot be seen with a normal microscope that is used for the identification of parasites. Stains or sometimes culturing are applied to identify the species. They are single-cell organisms with an outer cell wall which allows liquid and nutrients to pass through. Most bacteria multiply through binary fusion. It has been confirmed that under favourable conditions, some bacteria can generate well over 20 million organisms in a single day. Bacteria are naturally occurring in all lakes and ponds. The scientific community has mixed views as to the capacity of bacteria to cause disease. Some regard it as an opportunistic pathogen causing only secondary disease in koi that are already in a susceptible condition. Others claim that it is capable of causing primary infection in its own right. Koi ponds for a variety of reasons are susceptible to outbreaks of bacterial disease.

Last Updated on Monday, 15 September 2014 21:53