Why
analyse Nitrite? Nitrite can create a
big problem for fish when concentrations are high. Nitrite affixes to
the Hemoglobin molecule and inhibits Oxygen transport in the blood.
A concentration up to 0.3mg/l is considered potentially dangerous.
Where does Nitrite come from ? Nitrite is generated
through Ammonia oxidation by nitrifying bacteria such as Nitrosomonas.
Generally, high concentrations of Nitrite are observed when a newly
set up aquarium is going through the cycling process. Full biological
establishment of a new aquarium will commonly occur in approximately
one month. In saltwater environments this time can be almost doubled.
When the aquarium is fully established, no Ammonia and Nitrite should
be present. A sudden spike in the Nitrite usually signals a dangerous
imbalance in the system. |
Evaluating
the results
Cycling on new systems
Results above 0.3mg/L NO2
In start up conditions, it is common to see high levels of nitrate.
The bacterial strains responsible for nitrification (transformation
of ammonia to nitrite and finally to nitrate) are not available in a
new aquarium set-up. It is strongly recommened to use a biological aquarium
supplement in order to accelerate the bacterial growth and nitrification
process.
Established systems
If the result is close to 0.3mg/L NO2,
This indicates a safe level of nitrate. However, you should test again
24 hours later. If the level of Nitrite is above 0.3mg/L, then this
indicates that the Nitrite level is rising and this is probably the
result of the presence of dangerous levels of ammonia. If this is the
case, we recommend that you perform an Ammonia test on you water to
deal with the ammonia problem. Add a dobule dose of bacterial aquarium
supplement to ensure that adequate levels of befeficial bacteria become
rapidly available.
If the result is above 0.3mg/L NO2
A dangerous amount of Nitrite is present in the water. Immediatly change
20% of the water. Use Water Ager in the replacement water to reduce
fish stress, remove Chlorine and Chloramine and neutralize heavy metals.
Add replacement water slowly to avoid fluctuations in other water characteristics.
Add a double dose of bacterial starter to activate and supplement the
bioloical filter. Use of aquarium salt at recommeneded package instruction;
dosage can reduce the toxicity of nitrate.
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