World Library  
Flag as Inappropriate
Email this Article

Koi pond

Article Id: WHEBN0003294264
Reproduction Date:

Title: Koi pond  
Author: World Heritage Encyclopedia
Language: English
Subject: Koi, The Class of 1959 Chapel, Water garden, Fish pond, Carp
Collection: Chinese Gardening Styles, Garden Features, Japanese Style of Gardening, Ponds
Publisher: World Heritage Encyclopedia

Koi pond

Ornamental pond stocked with koi
Koi pond in Nagasaki, Japan

Koi ponds are ponds used for holding koi, usually as part of a landscape. Koi ponds can be designed specifically to promote health and growth of the Nishikigoi or Japanese Ornamental Carp.

The architecture of the koi pond can have a great effect on the health and well being of the koi. The practice of keeping koi often revolves around "finishing" a koi at the right time. The concept of finishing means that the fish has reached its highest potential. Koi clubs hold shows where koi keepers bring their fish for judging.


  • Components 1
    • Skimmer 1.1
    • Bottom drain 1.2
    • Mechanical filter 1.3
    • Biological filter 1.4
    • Ultraviolet light 1.5
    • Water and air pumps 1.6
  • Mobile app 2
  • See also 3
  • References 4
  • External links 5


Koi pond with extensive filtration
Pond with liner installed, note vertical walls and bottom drains


The skimmer allows water to be drawn from the surface of the pond. It collects leaves, pollen, twigs, uneaten food and all other kinds of floating debris. The skimmer usually has a clean out basket that can be quickly emptied on a regular basis to allow the skimmer to run properly. Most floating skimmers will also have a foam that sits underneath the basket to filter out the finer particles.

Bottom drain

Bottom drains are not required in water gardens but are very beneficial for Koi Ponds. When used in a pond that does not have rocks on the bottom, a bottom drain allows the heavy solids to be carried to the mechanical filter. In addition, many bottom drains are equipped with air diffusers, adding much needed oxygen to a pond.

Mechanical filter

Mechanical filtration can be accomplished in many different ways. The job of this filter is to trap solids, preventing them from clogging the Biological filter. The mechanical filter should be backwashed or cleaned out often. Types of mechanical filters include Vortex, brushes, matting, sand and gravel, sieve screen, and settlement chamber.

Biological filter

Biological filters convert the nitrogenous wastes from the fish. This cycle is called the nitrogen cycle. A biofilter can be constructed in many different ways. It is important for the koi keeper to understand how the filter is to be cleaned before they install one. Proper and regular cleaning of the mechanical and biological filters is critical for the health and quality of the koi. Bio-filters are sometimes divided into sub groups such as aerated or non-aerated. Types of bio-filters include:[1]

Ultraviolet light

Koi pond at Wat Pho, Bangkok, Thailand

An ultraviolet light is used to make algae flocculate (form into clumps), so that they can be removed by mechanical filtration. The UV sterilizer will also kill free-floating bacteria in the pond water.

Water and air pumps

Water pumps move water through the filter system and back to the pond in a recirculating manner. The important thing to understand about pumps is that they be sized to the pond and the filter system. When the total back pressure in the system is considered, a pump should be circulating the total volume of water at least once per hour for proper water quality. An air pump can be used to increase dissolved oxygen. In a heavily stocked koi pond, an air pump is a necessity.

Mobile app

In April 2009, Apple Inc. announced the mobile apps that had the most number of downloads since the App Store was launched. Among paid apps, an app simulating a koi pond called Koi Pond had the second highest amount of downloads.[2]

See also


  1. ^ Koi Pond Stocking Tips Drs. Foster. Retrieved 27 March 2015.
  2. ^ Apple's most popular apps ever, announced April 2009 Mobilewebgo. August 27, 2010.

External links

  • Associated Koi Clubs of America
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.