Black Algae Stains Swimming Pools

Black spot algae is unique in that it grows in spots on the walls or floor of your pool often in areas with low circulation.

Black algae stains swimming pools.

Black algae are single celled organisms that grow in large colonies. To treat black algae in your swimming pool start by brushing the sides and bottom of your pool to break up the algae so it s easier to remove. This is because they can protect themselves against their surrounding environment making them much more resistant to your standard chlorine levels. They are like other forms of algae since they also contain chlorophyll but are the most difficult to remove from swimming pools.

Our treatment will remove mustard algae in less than 72 hours. This is because black spot algae cannot attach in fibreglass pools because the surface of the pool is so smooth. It s an example of a cyanobacterium. Just like black spot yellow algae is somewhat resistant to normal chlorine levels.

This algae may appear black in the pool but when you retrieve a sample and rub it on a piece of white paper you ll notice a greenish tinge. Black algae can get into your pool several ways but one of the most common is from swimming suits that have been in the ocean source. It s related to spirulina another type of blue green algae and to red algae which also grows in swimming pools. This type of algae forms in a layered structure with the outermost layer protecting the lower layers.

Just like black spot yellow algae is somewhat resistant to normal chlorine levels. Maintain proper pool chemistry levels. For this reason black spot is not able to get properly embedded in your pool as it does in pebble pools. Black spot in fibreglass swimming pools it is very uncommon for black spot algae to form in a fibreglass pool.

Localized stains can be removed with a gallon of acid magic and a piece of pvc pipe. It appears as dark black spots on the walls and floor of the pool and is slippery to the touch. Next add a copper based algaecide to the water and aim the water return jets at the algae patches. Our treatment will remove mustard algae in less than 72 hours.

Very effective at plaster pool spot removal but slow for large stained areas. Black algae is a thread like growth that develops on rough surfaces in swimming pools. Black algae in pools is similar to that which can be found in between bathroom shower tiles and on silicone seams near the bathtub.