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Nitrite is produced in the pond or water garden in the forms of fish waste, uneaten food, and by nitrifying bacteria in your pond’s natural cycle as it breaks down ammonia. Low levels of nitrite inhibit respiration and suppress the immune system, while high levels cause suffocation in fish. The API Nitrite Test Kit reads nitrite levels quickly and accurately, and tests parameters from 0 to 5 ppm. With the Nitrite Test Kit, you can be sure that nitrite levels are always safe for your fish!

We recommend that you take a few minutes each week to monitor your ponds conditions and create a better underwater world for your fish. Testing your pond water has never been so easy or accurate!

Additional information


.5 lbs


3 × 2 × 5 in


Contains 180 tests and includes 1 test solution, easy-to-ready instructions, glass test tube and color chart.


CAUTION: CORROSIVE & HARMFUL. Causes burns. Harmful if swallowed. Contains hydrochloric acid. Avoid contact with skin and eyes. If on skin, flush with water for 15 minutes. If in eyes, hold lids open and flush with water for 15 minutes. Remove contact lens, if present, after the first 5 minutes, then continue rinsing. If swallowed, do not induce vomiting. Call a physician immediately.

FIRST AID: Give large amounts of water or milk of magnesia. Wash thoroughly after handling. Keep out of the reach of children.