API Nitrite Test Kit – Freshwater/Saltwater

Product details

API Nitrite Test Kit – Freshwater/Saltwater is a liquid aquarium water test kit designed to measure nitrite (NO₂⁻) in both freshwater and saltwater aquariums. Nitrite is a toxic byproduct that can build up when your biological filter is newly established or not yet fully processing ammonia. Use this kit to check nitrite levels during cycling and whenever you suspect water quality issues, then take corrective steps as needed before fish are affected. ([seasideaquatics.com](https://www.seasideaquatics.com/api-test-kits/1357-api-nitrite-test-kit-freshwater-saltwater.html))

Features:

• Tests nitrite in both freshwater and saltwater aquariums, making it a versatile option for mixed setups. ([seasideaquatics.com](https://www.seasideaquatics.com/api-test-kits/1357-api-nitrite-test-kit-freshwater-saltwater.html))
• Targets nitrite produced during the ammonia breakdown process by nitrifying bacteria in the biological filter. ([seasideaquatics.com](https://www.seasideaquatics.com/api-test-kits/1357-api-nitrite-test-kit-freshwater-saltwater.html))
• Uses a color-comparison approach against the provided chart to read results within its stated measurement range. ([americanaquariumproducts.com](https://www.americanaquariumproducts.com/uploads/1/4/4/7/144701674/nitrite-instructions-4.pdf?utm_source=openai))
• Helps you monitor cycling progress by confirming whether nitrite is present and moving toward zero. ([liveaquaria.com](https://www.liveaquaria.com/products/api-nitrite-test-kit?utm_source=openai))
• Includes kit components for conducting the test (testing solution, color card, and a glass test tube). ([lfs-aquarium.com](https://lfs-aquarium.com/products/api-nitrite-no2-test-kit?utm_source=openai))

Specifications:

• Parameter tested: Nitrite (NO₂⁻) ([seasideaquatics.com](https://www.seasideaquatics.com/api-test-kits/1357-api-nitrite-test-kit-freshwater-saltwater.html))
• Aquarium types: Freshwater and saltwater ([seasideaquatics.com](https://www.seasideaquatics.com/api-test-kits/1357-api-nitrite-test-kit-freshwater-saltwater.html))
• Measurement range: 0–5.0 ppm (mg/L) ([seasideaquatics.com](https://www.seasideaquatics.com/api-test-kits/1357-api-nitrite-test-kit-freshwater-saltwater.html))
• Toxicity note: Nitrite is toxic to fish ([seasideaquatics.com](https://www.seasideaquatics.com/api-test-kits/1357-api-nitrite-test-kit-freshwater-saltwater.html))
• Estimated test count: 180 tests per kit ([chewy.com](https://www.chewy.com/api-nitrite-no2-fresh-salt-water/dp/121936?utm_source=openai))
• What’s included (per listing): 1 bottle of testing solution, 1 color card, and 1 glass test tube with cap ([lfs-aquarium.com](https://lfs-aquarium.com/products/api-nitrite-no2-test-kit?utm_source=openai))