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Sera Nitrite Test Kit

Sera Nitrite Test Kit

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$29.99
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Makes it easy to monitor the Nitrite value in fresh and marine water and ponds. For approx. 75 measurements. 

Nitrite (NO2) is among the most toxic substances for fish in aquariums. It can enrich in the water in case of insufficient biological filtration.

The sera NO2-Test allows monitoring the nitrite level in fresh and marine water easily and reliably.

The toxic ammonia is converted by beneficial bacteria in the aquarium to nitrite, which is also toxic to the fish. Fortunately, in an established aquarium that has completely cycled, other bacteria convert nitrite into harmless nitrate. However, in new aquariums where the bacteria population hasn't grown adequately to detoxify the wastes from the fish in the aquarium, ammonia can build up to toxic levels quickly.


Nitrite poisoning follows closely on the heels of elevated ammonia as a major killer of aquarium fish. Anytime ammonia levels are elevated, elevated nitrite will soon follow. To avoid nitrite poisoning, test the water when setting up a new tank, when adding new fish to an established tank, when the filter fails due to power or mechanical failure, and when medicating sick fish.

In case of severe nitrite problems, sera Toxivec quickly provide help.

Sufficient for approx. 75 measurements.

Purchase with confidence knowing your test kit will last! Expiry 02/2022!

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