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Colombo Nitrate Test - (No3)
Colombo NO3 Test Kit measures Nitrate(NO3) which is produced by useful Nitrifying bacteria in filters of aquariums or ponds during the decomposition of toxic waste(ammonia and nitrite). Nitrate is not toxic for the fish in your aquarium or pond but too high concentrations can inhibit reproduction and growth.
Nitrate is a plant food. A higher level of nitrate will simulate potential plant growth.Therefore aquariums or ponds with high concentrations of nitrate often encounter problems with 'suspended algae' and 'gliding algae'.