Care

The Secret of Perfect Water

Before applying Bluewater Chlorine, it is important to make sure that your water is perfectly balanced. Water balance is the interaction of pH, pH buffer (total alkalinity) and water hardness. The simplest way of checking the balance is to use the Taylor Watergram (refer to the Bluewater Poolcare Manual or your local stockist for advice). Luckily, the consistent quality of New Zealand’s water makes it relatively easy to achieve water balance. However, sanitizers will not work properly in incorrectly balanced water and corrosion or scale- formation may occur on pool fittings, piping, etc. pH, pH buffer, and water hardness levels must be in balance if the pool water is to look right, feel right and be free of problems.

pH

This is a measure of acidity or alkalinity of water. It is measured on a scale ranging from 1 to 14.

  • A pH of 7.0 is neutral.
  • Above pH 7 the water is alkaline.
  • Below pH 7 the water is acidic.
  • Pool pH should be maintained slightly alkaline, between 7.2 and 7.8.
  • Water with high pH can cause cloudy water, scale formation, eye irritation and poor sanitizer efficiency.
  • Water with low pH can cause eye and skin irritation, corrosion, etching of plaster and excessive use of sanitizer.

The Problems Caused by Incorrect pH

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Problems of Acicity:

  1. Corrosion
  2. Etching of plaster
  3. Eye and skin irritation
  4. Excessive sanitiser use

Problems of Alkalinity:

  1. Scale formation
  2. Cloudy water
  3. Poor sanitiser efficiency
  4. Eye and skin irritation

pH is also affected by frequent pool use, heavy rain and the use of most pool sanitizers and chemicals. The pH level should be checked weekly and at the beginning and end of the pool season. Use your Bluewater Pool Test Kit for this routine check.

pH BUFFER

pH buffer refers to the amount of carbonates, bicarbonates and hydroxides dissolved in pool water. It is measured in parts per million (ppm). The ideal range for Bluewater chlorine is between 120 and 150ppm (Bluewater Stabilised Chlorine Tablets require 150-200ppm). pH buffer reduces the reaction of your pool water to factors that affect water pH, ie heavy rainfall, wind and dust.

If the pH buffer level is too low the pH of the pool is subject to rapid change. A high level of pH buffer will mean that pH adjustment requires more chemicals.

pH buffer level should be checked on a monthly basis and at the beginning and end of each pool season.

Use your Bluewater Pool Test Kit or ask your local stockist for advice.

Water Hardness

Hardness refers to the amount of calcium and magnesium salts in the pool water.

New Zealand water is usually low in calcium. It needs adjusting because low calcium hardness can cause etching of plaster and corrosion.

Water hardness should be checked at the beginning and end of each pool season. Your Bluewater stockist can do this for you.

keep your pool healthy, free call within NZ 0800 258 392

Hazardous Substance Emergencies

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Call 0800 243 622 24 hour, 365 day emergency responce service

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Four Bluewater Systems

Bluewater sanitizers come in four practical systems to cover individual pool owner’s needs, plus a pool stabiliser. Find the system which is right for you.

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The Secret of Perfect Water

It is important to make sure that your water is perfectly balanced. Water balance is the interaction of pH, pH buffer (total alkalinity) and water hardness.

read more