Water - Water Quality, Algae, Transport, Cohabitation with Other Species

Can flouride in tap water hurt Koi?

Pollution of the aquatic environment by sodium fluoride from some industrial processes has been linked to delayed hatching of fish eggs and reduced growth, which is why, when I clean my teeth, I rinse my mouth into the sink, not my Koi pond.

Dechlorinators

Manufacturers of products such as these do not like to divulge their trade secrets, so it is difficult to determine the exact make-up without expensive laboratory analysis.

Vitamin C to neutralize Chlorine

Below is the text of a recent study that evaluated the use of Vitamin C to de-chlorinate water. They found it much cheaper and more effective than many other chemical solutions. This study was done for municipal water systems, but has direct benefits for Koi ponds as well! Full methodology, as well as recommended dosages are given. There are additional benefits to using Vitamin C as well.

A Quick Understanding of Chlorine and Pond Filters

Article by Paula Reynolds

Tap water contains chlorine, a disinfectant that makes water safe for humans, but is harmful to fish. It is removed with a purifier, a dechlorinator, or a water treatment product from an aquatic outlet.

A Quick Understanding of pH and KH

Article by Paula Reynolds

Water from a household tap, a borehole or well, or rainfall will have unique properties and individual chemistry influenced by the location.

Series of Semi-useful Articles on Aquaculture

While none of these articles are specifically about Koi, the Koi keeper can learn many things by skimming these pages provided by Universities and the Aquaculture Industry. All pdfs are available for reading on-line or downloading.

Basic Principles of Water Recirculation and Filtration in Aquaculture

This is an excellent 3-page summary about water quality applicable to Koi ponds or any recirculating system in which fish are kept. See Outline of topics below...