Dr. Tim's

Dr. Tim's Ammonium Chloride Solution for Fishless Cycling

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This bottle of reagent grade ammonium chloride is for use when fishless cycling. Concentration is 50 mg/L of total ammonia-nitrogen (TAN). Dose 4 drops per gallon of aquarium water.*  Use with One and Only Nitrifying Bacteria.
1 drop equals 0.05 ml so this bottle will treat 300 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
*NOTE: As of November 1, 2016 we changed the concentration of the ammonium chloride solution so it now takes 4 drops per gallon.  The previous version called for 1 drop per gallon.  Please see the label on your bottle to determine how much to use.  If the bottle say use 1 drop use 1 drop if the bottle says use 4 drops use 4 drops.