Gingerbread Pet Supply 4 oz Ammonium Chloride is the perfect solution to help kickstart the nitrogen cycle in your aquarium. This high-quality, USA-made product is designed to add ammonia to your tank, providing the essential food source for beneficial bacteria that will help establish a stable, healthy environment for your fish. To use, simply add 4 drops per gallon of water to achieve an ammonia level of 2 ppm—just the right amount to promote the growth of nitrifying bacteria. This makes it ideal for beginners and seasoned aquarium owners alike who are setting up a new tank or troubleshooting an established one. For best results, pair this ammonium chloride with a nitrifying bacteria product to speed up the cycling process and ensure a faster, safer setup for your aquarium. With Gingerbread Pet Supply Ammonium Chloride, you're on your way to a thriving aquatic environment in no time.