What is Green Algae?

Green Algae are the most common with over 7,000 different species in existence. Approximately ten percent of these are marine species (found in the ocean) with the remainder being found in lakes, rivers, ponds and swimming pools. Green algae are named for the chlorophyll (the molecule that captures light energy to carry out photosynthesis) in the cell which gives them their green color. Green algae can be free-floating or surface clinging and can be found in all types of pools. They are typically the easiest to treat; however, some species may be more difficult to manage than others.