Colombo Test Kit - Nitrate (NO3)
Nitrate is produced from the breakdown of nitrite in the filter.
Nitrate is relatively harmless to freshwater fish, but its presence can indicate a deterioration in the aquarium environment, and high nitrate will encourage algae growth. The only way to know what the nitrate levelis by testing it with a Nitrate test kit.
Colombo Nitrate Aquarium Test Kit contains 40 tests. Full testing instructions included in the box