API Ammonia Test strips are the quick and accurate way to test for the presence of ammonia in both fresh and salt water aquariums. Ammonia is the number one killer of aquarium fish - even small amounts of ammonia can cause stress whilst large amounts of ammonia will lead to fish deaths. Fish continually release ammonia into the aquarium through their gills, urine and solid waste. Uneaten food and decaying organic matter also add ammonia to the water. The API Test strips provide a vital measure of ammonia levels between 0 and 6ppm. The API Testing Strips come in a desiccant-lined tube with snap-tight cap which provides maximum moisture protection for more accurate results. Simply 'Dip and Read' by comparing the test strip against the highly precise colour charts. The API Ammonia Test Strips include guidance on how to correct unsafe water conditions if levels of ammonia are found. Measures ammonia to help prevent fish loss Tests ammonia levels from 0-6 ppm Suitable for fresh and salt water aquariums 25 Tests Easy to use Aquarium, FoodTreatments&Planting, AquariumTestKits.