Types of Pool Algae

Types of Pool Algae Nearly every pool owner has had to deal with algae problems at one time or another. Even with a properly-working filtration system, sanitizers at their recommended levels, and a watchful eye, algae blooms can still develop. Algae spores can enter a pool in a variety of different ways, but is most commonly introduced into a pool through wind, rain, dirt, and even on a swimmer’s body or bathing suit. Keeping algae spores out of your pool is impossible, so it is important to prevent the microscopic spores from turning into unsightly algae blooms. Maintaining clean, algae-free water will help keep your pool and your family happy and healthy, Although there are over 20,000 known species of algae, there are only a few types that of algae that can survive and grow inside the sanitized environment of a swimming pool. Below are the kinds of algae that you might run into in your pool:

Green Algae

This is the most common type of pool algae. Green algae can show up either as discolored spots on your pool wall, or, more commonly, as large floating masses on the pool surface. While not particularly difficult to get rid of, green algae grows very quickly, so if left untreated, it can multiply to cover large areas of pool walls and surfaces.

Algae Pool Pink

Pink algae isn’t really algae at all, but a type of fungus known as Paecilomyces Lilacinus. The fungus forms into small colonies on pool surfaces, and can easily be eliminated through brushing and chlorination.

Black (Blue-Green) Algae

This is the toughest and most resistant type of algae, and it shows up as small, dark spots on the pool walls. Black algae is extremely difficult to get rid of because it buries its roots deep down in the plaster or tile gout, and will continue to grow back as long as the roots remain intact. Black algae also requires a mix of powerful chemical and vigorous, repeated brushing to eliminate.

Algae Pool Yellow Mustard Algae

Typically looks like small deposits or sand or dirt, and is usually found in the shady parts of the pool, and on pool steps and equipment like lights or ladders. Mustard algae is resistant to normal chlorine, so it requires a mix of powerful chemicals and vigorous, repeated brushing to eliminate.