Doesn nitrogen also encourage algae?
A3. Nitrogen, like phosphorus, is essential for algae growth. In freshwater ponds, however, nitrogen usually isn’t in short supply because of the activity of certain bacteria called cyanobacteria (so called “blue-green algae”). These algae-like bacteria draw nitrogen from the atmosphere, which is 78% nitrogen. The limiting nutrient for production of algae and plants is therefore usually phosphorus.
