How to Use NitroCycle

How to Use NitroCycle

What does Nitrocycle do?

Ammonia and nitrite are toxic biological waste products that can rapidly accumulate in recirculating aquarium systems. These toxins naturally convert to less harmful nitrate by the activity of 
nitrifying bacteria. In what is commonly known as the nitrogen cycle, ammonia is converted to nitrite by certain nitrifiers (e.g. Nitrosomonas); nitrite is converted to nitrate by others (e.g. Nitrobacter
). Thus, as these microbes populate a system, a biological filter becomes established (i.e. cycled). In order to protect sensitive marine livestock from ammonia and nitrite, the biological filter must fully mature before stocking the system. Various organic or inorganic nitrogenous compounds accelerate the cycling process. Inorganic sources such as Nitrocycle include simple salts such as ammonium chloride, whereas organic sources include decaying biomass such as dead prawns. There are distinct advantages to using an inorganic nitrogen source. The most significant benefits of Nitrocycle are as follows:

1.  It is easier to measure and​ dose.
2.  It is immediately available for uptake by the bacteria.
3.  Because it is inorganic (i.e. lacks carbon), it does not encourage early growth of competing heterotrophic bacteria.
4.  Unlike organic nitrogen sources, it will not foul aquarium water by introducing phosphate and dissolved organic matter.
5.   NitroCycle encourages fast colonization of nitrifying bacteria on synthetic bio

media (e.g. bioballs) as well as live or "dry" rock. It, therefore, helps to prevent dangerous ammonia spikes following the addition of valuable aquarium livestock. It does not foul or discolors aquarium water. Most notably, it does not contain phosphate or dissolved organics! This product comes in a graduated double-neck bottle, greatly simplifying
measurement/dosage. See below for more information.

Directions and Usage:

  1. Use 1mL of Nitrocycle per gallon of tank water to achieve an ammonia level of 3ppm. 
  2. 1 Bottle treats up to 250 gallons of water. 


This product is intended for use during initial (i.e. pre-stocking) aquarium conditioning. It should not be used in systems that have been stocked with live animals.

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