Black Algae In Vinyl Pool: How to Remove Black Algae

First, black mold or alga is uncommon for vinyl pools. It occurs more often in plaster facilities because it digs into the floor to create layers. 

However, if it occurs in your vinyl pool, there are things that you can do to remove it. Before I look at that, let’s know more about black algae and its causes.

What Are Black Algae?

 It is a highly-resistant and almost impossible to kill strain of algae. It appears like small blotches or black dots on a pool’s surface, floor, or walls.  

The spot is pin-head to quarter in size. Black algae come with a hard outer shell that makes it impossible for chemicals to penetrate inside. 

Conditions for Black Algae Development 

Algae prefer dirty water, and your pool water can provide the perfect conditions if it is not filtered. That can happen even when you maintain balanced water chemistry. 

The algae can emerge if the skimmer or filter is clogged, meaning that the water is not circulating freely. It can also grow if you do not run the filtration system daily, or the motor is damaged.  

The water can become cloudy if the system is not working correctly, and that means the conditions are perfect for black algae growth. Once you notice black spots on the walls, floor, or surface, know that the alga has established itself.

How to Remove Black Algae

You need two products to get rid of black alga from your vinyl pool: metal control product and black algae algaecide. 

The metal control is a product that contains calcium and helps to soften the alga outer shell. That allows the black algae algaecide to penetrate and kill the black alga in your pool.  

You will also require a pool brush with nylon bristles to scrub the surfaces. Here are the steps to follow: 

• Adjust your pool’s PH to 7.4-7.6 range and alkalinity to 80-120 PPM.

• Scrub the black spots using the nylon brush.

• Add 1½ quart of the metal control to 10K gallons of water.
• Mix your black algae algaecide with water and pour it on the pool sides, walls, and surface. Follow the manufacturer’s instructions when preparing the solution.

• Brush the spots every day until they clear.

In Conclusion

You can now know how to remove black algae from your vinyl pool and even prevent them from occurring in the future. Ensure that you clean your pool regularly to prevent algae growth.