Water quality is one of the most important factors in keeping Koi, Butterfly Koi, and Goldfish healthy and thriving in a pond. These fish live directly in the water at all times, so any imbalance can quickly affect their health, growth, colour, and immune system.
Why water quality matters
Fish waste, uneaten food, and decaying plant matter all release harmful substances into pond water. If these are not properly managed, they can lead to:
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High ammonia and nitrite levels, which burn gills and skin and can be fatal
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Poor oxygen levels, causing stress and lethargy
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Unstable pH, which weakens fish and makes them more prone to disease
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Excess nitrate and pollutants, encouraging algae blooms and poor water clarity
Koi and Butterfly Koi are particularly sensitive because of their size and long lifespan, while Goldfish can appear hardy but still suffer long-term damage in poor water conditions. Good water quality supports strong immune systems, vibrant colours, steady growth, and calm, natural behaviour.
How N Koi can help
N Koi offers a simple, stress-free water testing service to help pond keepers understand exactly what is happening in their pond.
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We send an easy-to-use kit to collect 2 water samples directly to the customer by post
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The customer collects 2 water samples and then returns it to us using the pre-supplied packaging
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Our team then professionally tests the water quality
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Results with pictures are sent back quickly by text message, WhatsApp or email
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If preferred, N Koi can also telephone the customer to explain the results and answer any questions
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This service takes the guesswork out of pond care and gives customers clear, reliable information so they can take the right steps to protect their Koi, Butterfly Koi, and Goldfish.
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A telephone order can also be taken to order this kit. Simply call us on 0330 0043 6676 or by Mobile WhatsApp 07596 101873
N Koi’s water quality testing service is not only simple and reliable — it is also excellent value, costing just £9.95.For £9.95, customers receive:
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An easy-to-use kit to collect a water sample sent directly to their home
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Return packaging. Simply take it to a Post Office
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Professional water quality testing carried out by N Koi
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Clear results and picture sent by text message, WhatsApp or email
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The option of a telephone call to discuss the results, if requested
At such a low cost, this service gives pond keepers peace of mind and helps prevent expensive problems caused by poor water quality, keeping Koi, Butterfly Koi, and Goldfish healthy and thriving for years to come.
DISCLAIMER: The pictures are of a test we did for a customer visiting our premises, and none of the products are included in our kit. If you wish to carry out your own testing, then please see the kit coming soon and available to buy under the Pond Accessories heading.
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