⬛Monitor Ammonia Level -- Ammonia is a deadly killer in your aquarium. Even though a small amount of ammonia can stress or even kill your fish. Luckily, our aquarium test strip monitors the most vital Ammonia and Nitrites level, so that you can take immediate action to prevent fish loss ⬛Test for 8 Water Parameters -- hygger 8-IN-1 test strips test for pH level, Hardness, Ammonia nitrogen, Nitrates, Nitrites, Total Chlorine, Carbonate Root and Total Alkalinity. Constantly monoitor water paremeters, provides good water quality for your healthy fish ⬛Quick, Simple, Accurate Reading-- Just dip the strip into aquarium 2 seconds, then pull it out and waits for 30 seconds. You can read the result by comparing the colors of the pads to the color chart with up to 96% accuracy