Water Maintenance

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To ensure you have a healthy pool and the people using it can do so in comfort, it’s important to maintain adequate water balance and sanitiser levels. Test strips are a quick way for pool owners to test for adequate sanitizer levels, pH and total alkalinity.

For best results, pool water should be balanced to these levels:

TEST RANGE
pH 7.2-7.6
Total Alkalinity 80-160 ppm
Calcium Hardness 200-250 ppm (Concrete Pools)

Balancing pH

Your pool’s pH level indicates how acidic or alkaline the water is, and the pH level should be tested and adjusted (if required) on a weekly basis.  The pH level is affected by rain, the water used to top the pool up, people getting into the water and chemicals, and pH imbalances can cause skin irritation and inadequate pool hygiene.

If the pH of the pool water is below a reading of 7, the water is on the acidic side of the scale, and corrosion of pool surfaces and equipment can occur.  If the pH of the pool water is above a reading of 8, the water is on the alkaline side of the scale, and scaling, deposits, and cloudy water can occur.

Total Alkalinity

To prevent the pH levels from varying up and down, the right concentration of acid buffers, or total alkalinity, must be maintained in the pool. The pool should be tested weekly with a total alkalinity of 80-160 ppm (parts per million) maintained.   Bi-carbonate of soda is used to raise total alkalinity, and acid is used to lower it.

Calcium Hardness

Calcium Hardness is the amount of dissolved calcium in the pool water. Low calcium hardness levels can cause corrosion, and high calcium levels can result in calcium deposits on the pool surfaces as well as equipment.

The proper range for calcium hardness in pool water is 200- 250 ppm (parts per million) for concrete pools and 175-225 ppm for vinyl pools.   Calcium hardness should be tested on a monthly basis by a pool professional.

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