Quickly monitor ammonia levels in your aquarium with API Ammonia Test Strips. Designed for freshwater and saltwater aquariums, these easy-to-use test strips help you regularly check water quality and identify elevated ammonia levels that may be harmful to fish and other aquatic life. Ammonia can enter aquarium water through fish waste, uneaten food, and decaying organic matter. Regular testing helps you monitor aquarium conditions and determine when water-care adjustments may be needed. Regular ammonia testing is an important part of aquarium maintenance, particularly when establishing a new aquarium or when water-quality issues arise. API Ammonia Test Strips provide a convenient way to monitor ammonia and support proper aquarium care.