Amtra Test NO2, to control nitrite values in freshwater and marine
Nitrites are the first step in the transformation of ammonia. Nitrites are very harmful and must therefore be absent.
These molecules are able to bind to hemoglobin contained in red blood cells, preventing them from carrying oxygen.
If you check your presence, you will need to clear the cause.
Improve the filtration system, use amtra clean or amtra clean procult and make a partial change of water.