Quick Definition:

Algae are small, plantlike organisms that are commonly found in swimming pool water.

What are Algae?

Algae describes an entire range of single and multicellular plantlike organisms commonly found in water.

For swimming pools, algae spores are constantly finding their way into swimming pools by contamination brought about by wind, rain, snow melt, grass and leaves, and insects.

Algae grows readily in warm, sunlit, stagnate water.  Common types of algae found in swimming pools are green algae, mustard (yellow) algae, and blue-green (black) algae. If algae is not controlled, an algae bloom occurs, where the spores grow into algae, and in turn create more spores and more algae.  Depending on the type of algae, an algae bloom will initially result in pool walls and floors feeling slippery, followed by visible algae growth on the pool surfaces and possibly the surface of the water.

How can you prevent Algae?

Although superchlorinating (shocking) a pool can kill some of the pool algae, algaecides are chemicals created specifically to break the life cycle of algae and reduce the growth of algae in swimming pools. Pool sanitizing chemicals such as chlorine or bromine also help to keep algae from establishing a persistent presence in the pool.


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