Hagen Nutrafin Nitrate 0.0 to 110.0 Mg/L for Fresh and Saltwater, 80-Tests
The Nutrafin Nitrate Test Kit allows you to measure the nitrate level present in your aquarium. Nitrate should be tested on a regular basis as a measure of pollution in the aquarium and to determine if a water change is necessary. Nitrate accumulates in aquariums over a period of time and is difficult to remove by conventional filtration means.