This bottle of reagent grade ammonium chloride is for use when fishless cycling.
Concentration is 50 mg/L of total ammonia-nitrogen (TAN).
Dose 1 drop per gallon of aquarium water.
Use with One and Only Nitrifying Bacteria.
1 drop equals 0.05 ml so this bottle will treat 1,180 gallons.
Generally during a fishless cycle one needs to add ammonium chloride to their tank 3 or 4 times so this bottle is enough ammonia to cycle aquariums up to 250 gallons.
Some conversions: 1 teaspoon equals about 5 ml which is 100 drops
1 tablespoon equals almost 15 ml which is 300 drops