Dr Tim's Ammonium Chloride

This bottle of reagent-grade ammonium chloride is for use when cycling. Dose of 4 drops per 3.8l of aquarium water. For use with One and Only Nitrifying Bacteria.

Generally, during a fishless cycle, you need to add ammonium chloride to your tank three times so:

• a 2-ounce (60 ml) bottle will cycle 100 gallons (359 litres)
• a 4-ounce (120 ml) bottle will cycle 200 gallons (757 litres)
• a 8-ounce (480 ml) bottle will cycle 400 gallons (1,514 litres)