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API Nitrite Test Kit





  • Directions

Nitrite is produced in the aquarium in the forms of fish waste, uneaten food, and by nitrifying bacteria in your aquarium’s natural cycle as it breaks down ammonia.

Low levels of nitrite inhibit respiration and suppress the immune system, while high levels cause suffocation in fish.

The API Nitrite Test Kit reads nitrite levels quickly and accurately in your tank, and tests parameters from 0 to 5 ppm.

Ammonia, Nitrite and Nitrate are the 3 stages of the Nitrogen Cycle. Each stage is toxic to aquatic life and if left untreated will lead to fatalities.

Ammonia (the 1st stage) is broken down by bacteria and converted into Nitrite which is then converted in its last stage to Nitrate.

API's Nitrite Test Kit, will determine the present level of Nitrite in your aquarium, so you can act accordingly to a suitable treatment.

This kit tests measures levels from 0 to 5.0 ppm. A Nitrite reading of 0 is desirable. 


Suitable for freshwater use.

180 Tests


Test kit includes:

1x nitrate test solution
1x glass test tube
1x laminated colour chart
1x easy-to-ready instructions

Fill test tube to indicated line with aquarium water.
Add 5 drops of test solution and cap lid.

Shake well and let sit for 5 minutes before comparing to colour chart.