The Salifert Nitrite Test Kit (NO2) gives you fast, accurate nitrite readings in both freshwater and saltwater aquariums. It's the essential test while cycling a new tank and a quick safety check whenever fish look stressed.
Why test nitrite?
Nitrite is toxic to fish and invertebrates. In a new aquarium it rises as the nitrogen cycle gets going, then drops to zero once beneficial bacteria are established. In a mature tank, nitrite should always read zero — any reading means your biological filtration needs attention.
Key features
- Approx. 60 tests per kit.
- Works in freshwater and saltwater.
- Easy colour-chart results in minutes.
- Perfect for cycling — know exactly when your tank is safe for livestock.
Specifications
| Parameter | Nitrite (NO2) |
| Number of tests | Approx. 60 |
| Method | Colour comparison |
| Suitable for | Freshwater & saltwater aquariums |
| Result time | A few minutes |
Cycling a new tank?
Test nitrite together with the Salifert Ammonia and Salifert Nitrate test kits to follow the whole cycle: ammonia rises and falls, then nitrite, then nitrate appears.
Frequently asked questions
What should nitrite read in an established tank?
Zero. Any detectable nitrite means the biological filter is not keeping up.
Can I use it in a freshwater or planted tank?
Yes — it works in both fresh and salt water.
Genuine Salifert product, shipped from Astra Aquatics, Chennai.