It can test freshwater tank, pond or nature aquarium of reef tank. An aquarium's happy life stars from here.

NO2 testIntroduction: NO2 is transformed from NH3/NH4, and is the middle product of proteindecomposition by bactearia. Even when NO2 usually causes certain symptoms suchas, bad appetite, fading body diseases, accordingly, NO2 test becomes a very improtantwork. NO2 level had better be maintained at 0mg/l in aquariums.NO2 test kitContents:1x22ml test reagent1x22ml test reagentTest vialColor scaleInstructions & Recommendations

NO2 test kit