Nitrite Checker For Koi Ponds
Nitrite Checker For Koi Ponds

Nitrite Checker For Koi Ponds

  • Byer Koi Farm
Regular price£69.95
Tax included.

It's essential to monitor the most common toxic pollutants in your pond regularly, and to monitor more frequently when your pond is going through a big change such as a change of seasons, introducing new fish, initially starting a pond, or after extreme weather conditions.

The two most common toxic pollutants that can damage your koi, or even kill your koi, are ammonia and nitrite.  Losses due to high ammonia or nitrite are unfortunately too common.  High ammonia and nitrite levels can be easily dealt with by a properly sized and maintained filter, and water changes.  So knowing the level of ammonia and nitrite is important for understanding the immediate danger to your koi, and also to understand how well your filters are performing.

The Ammonia Checker and Nitrite Checker we supply are a simple, accurate and cost effective way to measure and monitor the levels of these toxic pollutants.  This will help you keep healthy koi and maximise enjoyment from your pond.

If you want to know the key features and technical specs of these very handy and accurate checkers, please read on.

What your checker comes with
2 cuvettes and caps
Reagent starter kit (6 packets of nitrite LR reagent)
1 x 1.5V AAA battery
Instruction manual

Manufacturer: Hanna Instruments

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Key features
Small palm-sized design
Accurate from ±20 ppb ± 5% of reading
Dedicated to a single parameter
Uses a single AAA battery
Auto Power Off after 10 minutes inactivity
Built-in timer for timed reaction readings

Range 0 to 600 ppb NO2-N

Resolution 1 ppb

Accuracy @ 25°C ±20 ppb ±5% of reading

Light source LED @ 470 nm

Light Detector Silicon photocell

Method Adaptation of the EPA Diazotisation method 354.1

Environment 0 to 50°C; RH max 95% non-condensing

Battery Type (1) 1.5V AAA

Auto-off After ten minutes of non-use

Dimensions 81.5mm x 61mm x 37.5mm

Weight 64g

HI-707 Checker®

Koi delivery is via a specialist overnight fish courier service that we have been using successfully for many years.

Local pickup is available; choose that option in the checkout process, then once purchased, contact us to arrange collection.

For dry goods, the vast majority of items ordered before midday are shipped the same day, on an overnight service.

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Byer koi farm

UK breeder of champions

Pushing the boundaries is in our DNA, and now with Byer Koi Farm being a leading UK koi farm consistently producing champion winning koi, we are elevating the quality and perception of UK bred koi and contributing to the success of UK aquaculture

everyone contributes
Byer Koi Farm is a family business

Everyone lends a hand in peak season. Harvesting fry ponds and manning our stand at koi shows are just a couple of areas where the kids muck in.

farming koi the japanese way

Selection, selection, selection! Only a tiny proportion of each spawning makes the highest quality koi.

The year's we've spent optimising our breeding lines delivers better quality koi for our customers.



From Google Business Reviews: Absolutely exceptional. Wonderful, extremely health fish clearly very well reared and looked after. A credit to the breeder.

James Rogers
Watford, UK

From Google Business Reviews: Highly recommend the Koi Fry from this farm, the customer service, colour and quality of the fry was fantastic. I look forward to getting some older fish from the family run farm.

Keegan Rees

From Google Business Reviews: Family run business with high quality koi. Well worth a visit


From Facebook: Bought some fantastic koi which arrived this week.Great service and great communication start to finish. Will be back to buy some more

Ben Mort

From Facebook: Great place, friendly team and absolutely great koi.

Darren Walker

From Facebook: Unbelivable service from Adam and Amanda. Would recommend to anyone looking for quality koi.

Alex Dawson

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