Colombo No2 Nitrite Freshwater Test Kit (Best Before Date Jan 2026)

NO2 (Nitrite) Freshwater Aquarium Test Kit by Colombo - New price SGD13.6.

High Nitrite levels are a direct danger to your fish.

Nitrite (chemically abbreviated as NO2) is produced out of ammonia by nitrifying bacteria in your aquarium or pond.

As Nitrite is highly toxic to all water life, it is vital that the nitrite level in the water is zero!

If ammonia or nitrite levels are too high, make a water change!

Colombo have produced test kits that are developed especially for freshwater. These tests give the best results!

Colombo BV produces professional products for the maintenance of your aquarium and pond. Colombo products are developed with over 30 years of experience and continuous improvements supported by solid research and product development. Every product is tested intensively to guarantee optimal results.

It is recommended to perform regular water test(s) to ensure the water is clean and healthy for your fishes & plants.

Colombo water tests are easy to use and give reliable results.

Testing the water on frequent intervals is essential for maintaining your aquarium.