API Nitrate Test Kit

The API Nitrate Test Kit measures nitrate levels in both fresh &; saltwater aquariums. Tests nitrate levels from 0 to 160 ppm. 90 tests per kit.

Why Test for Nitrate Nitrate is produced in the aquarium by the biological filter. Beneficial bacteria in the biological filter convert toxic ammonia and nitrite into nitrate. A high nitrate level indicates a build-up of fish waste and organic compounds, resulting in poor water quality and contributing to the likelihood of fish disease. Maintaining a low nitrate level improves the health of fish and invertebrates. Excessive nitrate also provides a nitrogen source that can stimulate algal blooms. This is why water should be tested for nitrate once a week to make sure the nitrate does not reach an undesirable level.

What the Test Results Mean In new aquarium and aquaponics systems the nitrate level will gradually climb as the biological filter becomes established.

A nitrate level of 40 ppm (mg/L) or less is recommended for freshwater aquariums. In marine aquariums, it is best to keep nitrate as low as possible, especially when keeping invertebrates.

A Nitrate level of around 80ppm is reccommended for an established aquaponics system with plants and fish. A much lower nitrate level of around 20-40ppm is recommended for systems in their first 2-3 months.