API AMMONIA TEST KIT FOR FRESH AND SALT WATER by API $13.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Tests ammonia levels from 0 to 8 parts per million. Ammonia is the number one killer of tropical fish, and is continuously produced by the aquarium from fish wastes decomposing Mercury free salicylate test for both fresh and salt water