Koi Life Expert
The definitive, science-backed reference for koi pond planning, construction, water chemistry, fish health, and maintenance. Every recommendation grounded in peer-reviewed research and decades of practitioner experience.
Water Chemistry
The nitrogen cycle, ammonia toxicity, pH management, dissolved oxygen, and testing protocols.
Fish Health
Disease identification, quarantine procedures, salt therapy, parasitology, and treatment protocols.
Filtration
Mechanical, biological, and chemical filtration principles. Filter types, pump sizing, and UV clarifiers.
Feeding
Nutritional science, seasonal feeding schedules, color enhancement, and food ingredient analysis.
Seasonal Care
Spring startup, summer management, fall preparation, winterization, and pond turnover risks.
Planning & Construction
Site selection, excavation, liner choices, plumbing, bottom drains, and electrical requirements.
Koi Varieties
Classification systems, major varieties, judging criteria, and selecting quality fish.
Tools & Calculators
Pond volume, stocking density, ammonia toxicity, filter sizing, salt dosage, and more.
About This Resource
Koi Life Expert is built as a comprehensive knowledge hub for koi keepers at every level. Content is written to be academically rigorous yet accessible, with every major claim traceable to peer-reviewed journals, university extension publications, or recognized aquaculture textbooks. Where the science is unsettled, we say so directly and present the evidence on both sides.
This resource is maintained by the Koi Life editorial team and draws on research from institutions including the Southern Regional Aquaculture Center, Auburn University, the University of Florida IFAS, and others. Product recommendations are based on the editorial team's independent assessment.