What Causes Black Algae To Grow In Your Pool?

There are many different types of algae that one can find in a pool. Black Algae is the worst. Black Algae has the most resistance to chlorine and other chemicals than any other type of algae.

The reason for this is that the black algae have tiny tentacles that grip into the porous pores of a gunite and concrete pool.

You will also get black algae in fiberglass and vinyl pools as well. The only difference is that it is easier to clean the fiberglass and vinyl pools.

WHAT DOES BLACK ALGAE LOOK LIKE?

Black Algae are living organisms that have hard outer shells that grow and cling to porous pool surfaces. Black algae take the form of black or blue-green spots and can be clumped together with raised heads.

They do not float in the water. Black Algae do not brush off the pool walls easily either. They are the worst form of algae and the most difficult to get rid of.

WHAT CAUSES BLACK ALGAE TO GROW IN YOUR POOL?

Black algae can enter your pool in various ways.

  1. From people’s bodies. If they have been swimming in a river, dam, lake or the sea, just before swimming in the pool.
  2. From people’s clothes, if they were swimming in a river, dam, lake or the sea just before swimming in the pool.
  3. Any animal that gets into pools water can have the black algae on there fur or paws.
  4. Pool Accessories, pool equipment, can all carry black algae into the water if these things are not regularly hosed off with water or washed off with diluted bleach.
  5. Swimming clothing should always be washed before it is worn to swim.
  6. Black algae will form if the pool circulation system is not functioning correctly.
  7. Black Algae will form if the pool filtration system is clocked or has not been maintained therefore cannot remove contaminants out of the water.
  8. If the PH level of the pool water is too high.
  9. If the pool pump is not running for a long enough period. Recommended period 8 to 12 Hours a Day.
  10. When the pool pump is not running every day.
  11. When the amount of chlorine in the pool water is too low.

How to remove Black Algae is a hard job, unfortunately, somebody has to do it. You can save money by doing it your self with a bit of help from the family. You can read how I got rid of black algae in my pool.

Will Chlorine Kill Algae In a Pool?

Will Chlorine Kill Algae In A Swimming Pool?

Normally Yes. Chlorine kills algae and bacteria by a chemical action called oxidation.

Why Is Chlorine Used In Swimming Pools?

Chlorine is used in swimming pools to act as a disinfectant and to stop the growth of algae.
Without chlorine, most pools would be green within a few days.
It takes chlorine to kill algae. An algaecide is usually used in conjunction with a chlorine shock to kill algae.

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Chlorine helps pools by killing off the algae microorganisms. It also helps in keeping down the growth of algae.

Warm pool water with a temperature over 80° F and chlorine levels below 1 ppm contribute to algae growth. If there is a high concentration of phosphates in a swimming pool, you can get algae growth even if the chlorine level is higher than 1 ppm. The pool temperature can be checked by a floating solar-powered pool temp thermometer.

What Causes Algae In A Swimming Pool?

The lack of proper swimming pool water filtration and when chlorine levels have been allowed to drop too low. Or when the chlorine is not acting effectively because the water is out of balance, or the pool water has high levels of stabilizer (cyanuric acid). Hot and humid sun conditions as well as if the pool has been used a lot for swimming.

Algae are spores that are blown into the pool or carried into the water in other ways, They then multiply into blooms when the conditions are ideal for them.

Algae are spores that are blown into the pool or carried into the water in other ways, They then multiply into blooms when the conditions are ideal for them.

These tiny microscopic plants feed on nutrients in swimming pool water.