Backwash your pool s filter once the pressure gauge reads 8 to 10 lbs.
Green algae spots on bottom of pool.
However swimming in a dirty pool can put a damper on the fun and keep people out of the pool.
Jumping into a nice cool pool provides a great escape from the summer heat.
Often appearing as black spots it will securely adhere to the pool surface and form a protective outer layer.
Stains occur naturally in a pool and require regular maintenance to.
See instructions below what causes algae to form in a pool.
Past the clean limit.
Black algae is one of the toughest strains of pool algae to kill.
It appears as dark black spots on the walls and floor of the pool and is slippery to the touch.
To eliminate and prevent green algae in a swimming pool start by adding an extra dose of chlorine to your pool to shock the algae and stop the bloom.
Black algae is a thread like growth that develops on rough surfaces in swimming pools.
In prevention and treatment water chemistry is one of the most important steps to getting and keeping your pool algae free.
Let the chlorine work overnight then test the ph levels of the pool in the morning to see if the ph is back to normal.
The appearance of brown algae on the bottom of the pool is a sign of the beginning of an infestation of mustard algae.
This results in little or no algaecide reaching these spots and algae never really be eradicated.
It will normally look like small dark black spots on your pool walls.
How to remove black algae.
This type of algae forms in a layered structure with the outermost layer protecting the lower layers.
Even with main drains the returns pointed upward to the surface means little or no circulation on the bottom or lower areas of the walls.
Brush the bottom of the pool again this time pushing the green algae toward the drain.
This is one of the most difficult types of algae to get rid of and gets its name from its yellowish brown color.
You need to test your chlorine and ph levels with a good test kit which are more accurate than test strips and bring your ph level to about 7 8 by adding sodium carbonate to increase it or sodium bisulfate will also need to make sure the chlorine is at least above 1 ppm.
Treatment should begin as soon as these spots appear and may need.
Similar to mustard algae black algae can also thrive in your pool filter.
To get rid of it you will need to do heavy brushing vacuuming and chlorination.
Brushing the affected area will help in the treatment process.