The API Ammonia Test Kit is designed for both freshwater and saltwater aquariums, utilizing a salicylate-based method to accurately detect ammonia levels. As the primary cause of tropical fish mortality, ammonia is constantly generated in tanks from fish waste and leftover food. This kit effectively measures ammonia concentrations ranging from 0 to 8 ppm, helping to maintain a safe environment for your aquatic pets. For more aquarium care products, visit shop.morphmarket.com.