Tests for nitrite in freshwater & saltwater aquariums. Nitrite, toxic to fish, is produced by nitrifying bacteria in the biological filter as it breaks down ammonia. 180 tests per kit.
![API Ammonia Test Kit Freshwater and Saltwater 130 Tests API Ammonia Test Kit Freshwater and Saltwater 130 Tests](https://cdn11.bigcommerce.com/s-ldfio/images/stencil/500x659/products/2525/190222/original__82239.1721668270.png?c=2)
Tests for nitrite in freshwater & saltwater aquariums. Nitrite, toxic to fish, is produced by nitrifying bacteria in the biological filter as it breaks down ammonia. 180 tests per kit.