Algues ou toiles glissantes

Possible causes

You know there is scale build-up in your pool water when you notice white, grey or brownish sandy deposits on the walls and on the equipment. The walls of the pool can therefore become rough to the touch and water flow can be disrupted. Possible causes may include:

  • High pH
  • High total alkalinity
  • High calcium hardness

Suggested solutions

  • High pH: Adjust pH to 7.2 - 7.8. Lower pH by using pH-.
  • High total alkalinity: Adjust total alkalinity to 80 - 120 ppm. Lower alkalinity using Muriatic Acid.
  • High calcium hardness: Adjust calcium hardness to 200 - 300 ppm. (There is no existing product for lowering calcium hardness).

Preventive maintenance

  • High pH: Maintain pH at 7.2 - 7.8.
  • High total alkalinity: Maintain total alkalinity at 80 - 120 ppm.
  • High calcium hardness: Maintain calcium hardness between 200 and 300 ppm. Add 30 mL of Scale Control or Metal Control per 10,000 L of water once a week.

 * If you have a pool heater, Scale Control and Metal Control will help protect your pool heater against corrosion and scale build-up. It is recommended to pour 1 L in the pool twice during the summer.

* In order to maintain clear and sparkling water during the swimming season, make sure to have your pool water analyzed regularly by your specialized retailer to adjust and maintain the following parameters: total alkalinity, calcium hardness and stabilizer. Ideally, the week following the opening of your pool, in early June and late July.