Dr Tim’s Ammonium Chloride 8oz 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:
- 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)