Aqua Medic Nitratereductor NR 5000 Instrukcja obsługi - Strona 3
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Drukuj stronęFig. 2: Nitratereduktor 5000
2. Theory
Nitrate is coming into the aquarium via 2 different paths:
- with the tap water, with every water change or with the replacement of the evaporated water
- by biological reactions in the aquarium.
These biological reactions are responsible for the farmost biggest part of the increase of the
nitrate level.
How is nitrate produced in the aquarium?
When the animals are fed with dried, living or frozen food, proteinaceous substances get into
the aquarium. These are the basics of the diet for the animals. A big part of the nitrogen, from
the food is however excreted into the water. This nitrogen is metabolised by bacteria, living in
the aerobic filter via the toxic intermediate substances ammonium and nitrite to the less toxic
nitrate. These biolochemical reactions take place in the presence of oxygen:
The bacterium Nitrosomonas oxidises Ammonia to Nitrite, the bakterium Nitrobacter the
Nitrite to Nitrate.
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