What Is The Nitrogen Cycle In A Pond?

The nitrogen cycle in a koi pond is how helpful bacteria break down fish waste, harmful materials, and debris. This natural process happens in healthy water environments like ponds and lakes. The nitrogen cycle is important for cleaning the water in the ecosystem. This cleaning process changes ammonia into nitrate, a step called nitrification. It starts with ammonia, created when bacteria break down waste from fish, plants, invertebrates, dead organisms, and leftover food. In the nitrogen cycle, bacteria that need oxygen further change the ammonia.