Cold Water Effects on Koi

This article is written by Rosimeri Tran, KHA, to discuss the effects of cold pond water temperature on koi and how the koi are affected by vast water temperature changes. Cold pond water temperatures in our region that range from approximately 40°F to 45°F during the winter months cause the biological filter (bio-filter) to work …

Quarantine Your New Koi

The purchase of a new koi is an investment in expanding your koi hobby. Adding the new arrival to your pond is super exciting, as you want to see the new koi swimming with the rest of your koi. But introducing this new koi to your pond without proper precautions could brew trouble. First, this …

Koi Pond Water Quality

The number one requirement your koi fish need is clean, oxygenated water that is free from toxins. There is a saying that we are not just koi keepers, but water quality keepers. If the koi pond water contains toxins such as high ammonia, nitrite, and pH, the koi will not do well and may even …

muddy koi pond

Effects of Rain in the Pond

Learn how rain water can potentially harm your pond and koi with polluted water, dangerous runoff, toxic chemicals, and debris. Be sure to measure your water pH and kH.

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Koi Varieties

There are many different varieties of koi, all of which vary in color, size and patterns.