The hygger 8-in-1 Aquarium Test Strips are designed to help keep your freshwater or saltwater aquarium clean and safe. With a wide range of tests, including pH, hardness, ammonia, nitrite, nitrate, chlorine, carbonate, root ph, alkalinity, and total alkalinity, these strips provide excellent monitoring of your aquarium’s water quality. The quick and easy testing process means you can take action to prevent fish loss as soon as possible.