API - Ammonia Aquarium Test Strips - 25 Test StripsDESCRIPTION Use the API Ammonia Test Strips as the quick and accurate way to test for the presence of ammonia. Kit reads 0 6 ppm of ammonia, and alerts you to unsafe ammonia levels before they can harm fish or result in fish loss. Kit includes stay dry tube with snap tight cap, and information on how to correct water conditions. We recommend that you take a few minutes each week to monitor your aquarium conditions and create a better underwater world