What is Nitrite?
Nitrite is the intermediate nitrogen waste product in the biological filtration process. After fish release ammonia waste, bacteria convert it to nitrite which is still dangerous to the fish. In a healthy biological filter, bacteria convert the nitrite into nitrate which is relatively non-toxic to fish.
Nitrite poisoning follows closely on the heels of ammonia as a major killer in aquariums. Just when you think you are home free after losing half your fish to ammonia poisoning the nitrites rise and put your fish at risk again. Anytime ammonia levels are elevated, elevated nitrites will soon follow. To avoid nitrite poisoning, test when setting up a new tank, when adding new fish to established an tank, when the filter fails due to power or mechanical failure, and when medicating sick fish.



  • 1x Aqua One Nitrite Test Kit
  • Contains 60 tests
  • 100% Genuine Aqua One Product
  • Brand: Aqua One
  • Product: Nitrite Test Kit
  • Testing Range: 0 - 2.0ppm
  • Test per kit: 60
  • Kit Includes: Colour Chart, Instructions, Test Tube, Regent Solutions A & B
  • Water Type: Freshwater & Saltwater
SKU 92054
Barcode # 9325136080421
Brand Aqua One
Shipping Weight 0.1000kg
Shipping Width 0.120m
Shipping Height 0.120m
Shipping Length 0.050m
Unit Of Measure ea
Assembled Length 0.050m
Assembled Height 0.120m
Assembled Width 0.120m

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