Colombo NO2 Test Kit

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Colombo Nitrite Test Kit, Nitrite (NO2) is produced from the breakdown of ammonia in the filter. Nitrite is highly toxic to fish, but is usually removed from the water by the bacte ria which live inside the filter.However, in new ponds and aquariums, or if the filter bacteria are damaged, the nitrite level may become toxic. The only way to know what the nitrite level is, is by testing the water with a Nitrite pond test kitColombo Nitrite Test Kit contains 40 tests. Show more