Cloudy swimming pool water

Pool water problem - cloudy water

Cloudy swimming pool water is not only uninviting for swimmers, but is also indicative of problems in the pool water chemistry and can affect the health of those using the pool.

Causes of cloudy pool water

Cloudy pool water is usually the result of one or more of the following:

  • high calcium hardness level;
  • high conditioner level;
  • high pH;
  • low pH;
  • high total alkalinity;
  • high level of total dissolved solids;
  • low chlorine level;
  • algae;
  • large volume of microscopic particles in the pool water;
  • filter/ filtration problems.


Clearing cloudy water

With the Pool Wizard installed in your pool, cloudiness due to high calcium hardness, low chlorine or similar problems will never be seen again.

Conditioner: partially drain and refill the swimming pool to bring the level down to the maximum of 80ppm or below.

High pH: add pH reducer to bring the pH within the range of 7.2 - 7.6

Low pH: add pH increaser to raise pH to 7.2 - 7.6

Total alkalinity : reduce the total alkalinity according to the directions at total alkalinity problems.

Total Dissolved Solids: reduce the Total Dissolved Solids by partially draining and refilling the swimming pool to bring the level below 1,500ppm.

Microscopic particles : in extreme conditions the Pool Wizard may require the use of a flocculant or coagulant to clear the particles suspended in the pool water. Add flocculant and then vacuum to clear the water.

Filter/ filtration problems : backwash, wash or clean filter or filter medium. Treat or replace sand, DE or cartridge. Or call in your local pool pro for advice or help.


Tried and trusted since 1983


Pool Wizard helps solve cloudy pool problems