Colombo Nitrite Test Kit (NO2), is produced from the breakdown of nitrite in the filter. Nitrite is relatively harmless to freshwater fish, but its presence can indicate a deterioration in the aquarium environment, and high nitrite will encourage algae growth.
The only way to know what the nitrate level is by testing it with a Nitrite test kit.
Colombo Nitrite Test Kit contains 40 tests.
Welcomed wholesale buy will be cheaper
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