Fluval Nitrite Test Kit

Nitrite forms as beneficial bacteria convert ammonia in the aquarium. High nitrite levels can be highly toxic to fish if they remain elevated for over a week. New tanks often experience prolonged nitrite spikes, while overcrowded aquariums with inadequate filtration may show ongoing issues. To prevent harm, enhance filtration, maintain the tank properly, and test for nitrite regularly. Weekly testing is advised to monitor and address any nitrite presence effectively.