Ammonium Chloride

  • Great for Fresh or Saltwater Cycling

  • FritzPro Ammonium Chloride is Highly Concentrated, Great for Large Systems

  • No Scents or Dangerous Additives

About Ammonium Chloride

In most aquariums, the biological cycle is started by introducing fish into the aquarium. The fish excrete ammonia, which acts as a food source for nitrifying bacteria. Nitrifying bacteria convert ammonia into nitrite and then nitrite into nitrate. Fritz Ammonium Chloride (NH4Cl) can be used as a source of ammonia to initiate the growth of nitrifying bacteria without the presence of animal life. Fish should not be present while using ammonium chloride.

For smaller volume aquariums, try our easy-to-dose liquid Fishless Fuel.

Directions & Dosage

Use 4.5 g (approximately 1 level tsp) per 100 U.S. gallons (380 L). This dose will create an ammonia concentration of approximately 4 ppm. 

  • Use along with nitrifying bacteria (FritzZyme or TurboStart) as a food source
  • No equipment restrictions necessary
  • Contraindications: DO NOT add Ammonium Chloride to an aquarium with livestock present
  • Dry products measured by volume (teaspoons, cups, etc) will always give approximate results - use a gram scale if available. If a gram scale is not available, be sure to test for correct concentration after use.
  • Overdosed? Perform small water changes if needed to dilute
  • Test with an ammonia test kit with a range up to at least 4 ppm

NOTE: Be careful not to use too much ammonium chloride. Raising ammonia levels above 5.0ppm may actually slow the cycle time.

Safety Data: Keep out of reach of children!

Sizes

Size Treats Item Number
500 g varies 89500

FAQs

FAQs

See below for frequently asked questions regarding Ammonium Chloride.

  • Ammonium Chloride Best Practices
    • Use along with nitrifying bacteria (FritzZyme or TurboStart) as a food source
    • No equipment restrictions necessary
    • Contraindications: do not add Ammonium Chloride to an aquarium with livestock present
    • Dry products measured by volume (teaspoons, cups, etc) will always give approximate results - use a gram scale if available. If a gram scale is not available, be sure to test for correct concentration after use and observe for any changes in fish behavior.
    • Overdosed? Perform small water changes if needed to dilute
    • Test with an ammonia test kit with a range up to at least 4 ppm
  • How do I use in a fishless cycle?

    One level teaspoon of ammonium chloride is approximately 4.5 grams; 4.5 grams per 100 gallons of aquarium water will create an ammonia concentration of approximately 4 ppm. Add nitrifying bacteria, such as FritzZyme or FritzZyme TurboStart and continue to monitor both ammonia and nitrite levels daily. Do not reapply ammonium chloride or add fish until both ammonia and nitrite levels are at or near zero concentration. Once ammonia and nitrite concentrations are at zero, you should either add a second dosage of ammonium chloride or add fish so as not to interrupt the food source of your biological filter for more than 72 hours (3 days).

  • I have a small tank, how do I measure this product?

    For much smaller tanks, we recommend our liquid ammonia - Fishless Fuel. If you want to use the dry powder, use a small pinch and test for the ammonia concentration and adjust accordingly. The amount of starting ammonia does not need to be exact, but recommended to be between 2 - 4 ppm.

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