The Seachem MultiTest Ammonia kit provides precise measurement of both total ammonia (NH3 and NH4+) and, more importantly, toxic free ammonia (NH3) in both marine and freshwater aquariums. Unlike other tests, it gives you a clear picture of the dangerous ammonia form that can harm your fish and corals, allowing for more accurate and effective water quality management. This is essential for maintaining a stable and healthy aquatic environment, especially during the critical cycling phase or when adding new livestock.

This kit delivers highly accurate readings down to less than 0.05 mg/L and is virtually free from common interferences. Its unique advantage lies in its gas exchange technology, the same used in Seachem's Ammonia Alert sensor. This allows it to accurately measure free ammonia even when ammonia-binding water conditioners like Prime, Safe, or AmGuard are present. Competing salicylate or Nessler-based kits can produce falsely high readings by breaking down these conditioners at the high pH required for their tests.

This test kit is ideal for the serious aquarist who demands precision and reliability, especially those who use ammonia-detoxifying products as part of their regular maintenance or emergency protocols. It is a must-have for anyone cycling a new tank, managing a high bioload, or troubleshooting water quality issues. By distinguishing between non-toxic ionized ammonia and its toxic free form, this kit provides the critical information needed to protect sensitive inhabitants and ensure long-term aquarium success.