This bottle of reagent grade ammonium chloride is for use when fishless cycling. Concentration is 40 mg/ml of total ammonia-nitrogen (TAN). Dose 4 drops per gallon of aquarium water.* Use with One and Only Nitrifying Bacteria.
Generally during a fishless cycle you need to add ammonium chloride to your tank 3 times so:
We strongly recommend downloading and following our recipe for successful fishless cycling: