Sundays Off Pools

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4948 Highway 169 North
New Hope, MN 55428

3 Types of Pool Algae

12/05/20173 Types of Pool Algae

There are three types of algae commonly found in swimming pools: yellow, black and green. Each should be a concern of homeowners.

Black algae is the most dangerous form of algae pool owners deal with. It is a dark blue-green in color. The early signs of this algae are the appearance of black specks that look like dirt particles at the bottom of the pool. It via a slow progression. It starts with black specks and then expands outwards. Once the black dots grow larger, the algae grows at a rapid rate at the bottom of your pool.

This type of algae extends across the bottom of the pool. It grows deep into the plaster and concrete on your floor. When left untouched, black algae can cause structural damage to your pool. It can grow and thrive at a deeper depth and in lower lit places. It can be prevented with algicides and sanitizers.

The most common form of pool algae is green algae. You will notice it initially as a green slime on the pool or spa surface area. The visible algae can be removed with a pool brush, but you have to sanitize the water properly to keep it from growing back. The best way to stop green algae is to use chemicals. This type of algae grows quickly and has to be killed quickly to avoid it overrunning your pool.

Yellow algae have a much slower growth rate, but it is difficult to eliminate. Similar to the green algae, you can remove the surface layer with a brush and then expose the underlayer to the effect of algicides and chlorine. The best way to remove it is to perform superchlorination.

Algae is the most widespread issue that swimming pools have and it is one of the primary reasons that it is important to have a professional monitor your swimming pool on a recurring basis. If you are experiencing an algae problem, do not hesitate to contact us online or by calling 763-546-1651.