Brush daily for a week with the proper brush for your pool paying special attention to algae affected areas.
Black algae in saltwater pool.
Black algae also come from cyanobacteria and it is not an algae type.
The protective layer that forms on black algae makes the algae otherwise impervious to regular sanitizers so you must brush the algae to break through this layer so that chlorine and algaecides can kill the organism.
Maintain proper pool chemistry levels.
You will notice it in the form of black stains or spots on the solid parts of your pool such as the floor or the walls.
If you have black algae in your pool you have black algae in your filter.
If the algae problem is extensive use a filter cleaner rather than just plain water.
It keeps your pool algae free without foaming and contains a clarifier to keep your water sparkling.
If your pool turns to black from algae this case is quite rare and only happens at the beginning of the year of if you neglected your water salt pool for weeks or months then you will have to quadruple shock it using four pounds per 10 000 gallons of pool water.
If there s only a small amount of black algae in the pool you can probably get away with backwashing your pool filter for sand or de filters or rinsing the filter cartridge.
This is the best multi purpose algaecide.
Black algae is more likely to come back after an initial outbreak.
But because it contaminates salt pools often and it looks like algae people refer to it as such.
It is recommended that you use all in one on a weekly basis as part.
Use suncoast all in one algaecide to prevent future algae breakouts.