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Water quality

Buffering Ponds



This article was compiled by David Hulse and published in Koi Carp Magazine, October 1999. I regard this as the most practical article for the average Koi keeper to understand the buffering of ponds and it is published here with the kind permission of Koi Carp magazine.

The buffering system of a pond is responsible for holding the pH value of the water at a constant value. Here we will look at how this system works and why it is so important for the health of your Koi.

Last Updated on Friday, 16 July 2010 23:15


Consequences of overcrowding

Recently a very interesting discussion took place on the Koi4u forum. The discussion centred on the consequences of overstocking and it turned out as a highly emotional topic. The fact remains that the koi keeper creates a far from perfect environment for koi that can never accurately duplicate the natural environment, unless some new technology will enable us to do so. Because water is not an unlimited resource, ponds have to be constructed as a closed system where water is recycled. The hobbyist today can choose between a myriad of filter systems, but in essence the principal behind the systems remain the same. With the exception of perhaps ozone, all utilise bacteria to do the work with varying levels of success. It is also not possible to devise a generic formula to determine the correct stocking levels for all ponds. There are just too many variables that come into play in ponds because of the differences in water volume, surface area, filter system, aeration, turnover rate, feeding regime, water source, water changes, food quality and maintenance schedule by the owner.

Last Updated on Sunday, 20 November 2011 08:56


New Pond Syndrome

 Article published with the kind permission of Pieter de Villiers

New Pond Syndrome occurs when excessive inputs of fish waste can’t be dealt with adequately by the pond filter, leading to the build up of pollutants, which if left lingering in your pond water can be catastrophic. Such a build up of ammonia would adversely affect water quality, causing Koi a range of health problems which if left untreated could lead to their untimely death. NPS are often the first problem encountered by new Koi keepers.It can seem so extreme, with solutions seeming so long term that NPS can put people off keeping Koi all together. Many encounter it unknowingly in the form of diseased fish, (blaming the Koi dealers!) and tries medicate the problem away. Where NPS is the cause of the health problems treating, the Koi will not help.

Last Updated on Monday, 19 April 2010 16:28


Water quality - introduction

The biggest killer of koi is undoubtedly the knock-on effect of unsuitable water quality. Remember, clear water is not necessary healthy water.

Koi is no more than a domesticated carp (Cyprinus carpio). Unlike their wild cousins that are much hardier, koi has been subjected to inbreeding to such an extent that the immune system has been compromised. Koi are therefore much more affected by their environment.  

The whole concept of our hobby is not only the ability to keep koi, but the ability to keep the water and pond system healthy. Our systems are based on recycled pond water and during the recycling process; a lot of things happen that has a definite influence on the fish.

Last Updated on Monday, 08 November 2010 19:52