Fritz Fishless Fuel provides a clean, controlled ammonia source for establishing a healthy biological filter without risking livestock. This liquid formula eliminates the uncertainty of powder alternatives and organic materials, delivering precisely dosed ammonia to feed nitrifying bacteria during your fishless cycle. Compatible with both freshwater and saltwater systems, the dropper bottle ensures accurate application—just 4 drops per gallon reaches the recommended 2 ppm ammonia level. With 40 mg/mL total ammonia nitrogen and USA manufacturing, Fritz Fishless Fuel streamlines the nitrogen cycle process, allowing you to build a robust filter foundation before introducing any animals to your aquarium.