JBL ProAquaTest NO2 Nitrite, Refill

The JBL ProAqua Test NO2 is a water test for analysis of nitrite content in freshwater and seawater aquariums, as well as for ponds.

The degradation of all organic substances (feed and plant residues, excretions of fish) in the aquarium and pond is done via the so-called nitrogen cycle. Proteins are converted into ammonium and this into nitrite and harmless nitrate. Certain bacteria are responsible for this process. By measuring the individual intermediates ammonium, nitrite and nitrate, statements can be made about the "functioning" of the system. For example, medicines for curing fish diseases can damage the beneficial cleansing bacteria and thereby lead to an increase in ammonium and / or nitrite levels. As a rule, ammonium will not be measurable in a well-maintained aquarium with a powerful biological filter. Ammonium is a plant nutrient and non-toxic to fish in low concentrations. Depending on the pH value, however, ammonia (BH3) can form from the ammonium. For this reason, levels should always be checked with the ammonium measurement, a pH measurement. Nitrite, like ammonia, is a powerful fish poison. Depending on the sensitivity of the species, concentrations between 0.5 and 1mg / l (ppm) can be fatal. Marine fish and young fish are more sensitive than adults.

Recommended nitrite values:
Freshwater aquarium (community aquarium): 0-0.2 mg / l
Malawi Lake Tanganyika: 0-0.2 mg / l
Plant aquariums with few fish (aquascaping): 0-0.2 mg / l
Marine aquariums: 0-0.2 mg / l
Ponds: 0-0.2 mg / l

Our expert Oliver Knott recommends:
Inexplicable fish diseases or fish deaths are often the cause of a bacterial formation - a water test gives quick and safe information about it!