Water Hardness

Controlling the Hardness Level of Your Spa Water

Water hardness is a concentration of calcium and magnesium in your hot tub or spa water. It is important that your water remain at the appropriate hardness level in order to prevent erosion of equipment and other parts of your spa. The ideal calcium hardness level for hot tubs and spas is between 200 and 400 PPM (parts per million).

Depending on where you live and the type of water you are using, your water hardness may be too high or too low. It is important to test your water in order to determine whether it is at the appropriate level or if changes need to be made. It is relatively easy to correct the level of water hardness when it is too high or too low.

Low hardness can be corrected with a product called Hardness Up or with any type of calcium booster. It is important to recognize that calcium boostera are not recommended if you are using pH balance or other pH holding products. These two types of hot tub chemicals are not compatible and may cause damage to your tub. If your water is too hard, simply cut back on the amount of chemicals you are using.

There may be some indications of hard or soft water which can assist you in determining which types of chemicals to use to correct the problem. It is always best to test your water using water testing kits or testing strips in order to ensure the results are accurate. Sometimes indications of what you think may be wrong with your water are incorrect. Testing your water will ensure you take the appropriate steps to correct the problem.

Indications of high hardness in your water include the following:

  • Cloudy water
  • Scale formation
  • Foamy water
  • Irritations to the skin and eyes

Indications of low hardness in your water may include the following:

  • Cloudy water
  • Foamy water
  • Corroded metals and equipment

Water hardness levels that are too high or too low can cause health issues, whether it is with the skin, eyes or other parts of the body. It is your responsibility to ensure the protection of all individuals using your hot tub or spa – remember to test your water regularly and take the appropriate measures to ensure healthy water.

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