Dr. Tims Ammonium Chloride
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.
During a fishless cycle you need to add ammonium chloride to your tank 3 times so:
a 2-ounce (60 ml) bottle will cycle 100 gallons (359 liters)
a 4-ounce (120 ml) bottle will cycle 200 gallons (757 liters)
a 8-ounce (480 ml) bottle will cycle 400 gallons (1,514 liters)