What types of algae are out there and how do I treat my pool if affected?

Mustard Algae – Common algae in pools appears yellow-brown or “mustard” colored. It brushes off the walls of the pools easily, but quickly returns. It often grows in shady areas with poor circulation. It resists chlorine and shock treatment.

Solution – Use an algaecide along with chlorine shock. Follow label directions. Place all vacuum equipment – hose, head, pole, brushes, etc. into pool during treatment Maintain a higher than normal chlorine reading for 4 to 5 days after treatment.

Green Algae – Green algae is one of the most common problems for pools. It usually appears in corners or other areas where circulation is poor. Once established, green algae can grow explosively.

Solution – Use Algaecide along with chlorine shock.. Follow label directions. It is also recommended to use a flocking agent, always vacuum to waste or drain (not backwash).

Black Algae – A very resistant form of algae that clings to the pool’s walls, floor, and cracks. The longer black algae are present, the longer it will take to get rid of it. Black algae can actually pit the mar cite finish in a gunite pool. Treat black algae as soon as it is detected. Black algae are usually found in gunite/concrete pools.

Solution – Brush algae spots vigorously with a stiff algae brush and pour algaecide along the sides where spots are visible. Run filter continuously for one hour, and then add chlorine shock to the pool. Turn off filter and leave off for several days.

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