Glossary

Water Chemistry plays a large role in caring for your pool interior. Total water balance ensures that the mineral content of the water is in an appropriate state to protect the surface finish and equipment creating a more comfortable swimming environment.

Purpose of adding Chemicals Many pool owners are concerned with over chemicalising their pools. The purpose of adding chemicals to the pool water is not to create a chemical environment but to create neutral, balanced water that is healthy and safe to swim in.

Water Balance All types of water introduced into a pool contain different minerals at different levels. It is important to maintain these levels in balance to ensure the safety of swimmers and the longevity of your pool surface.

In caring for your Quartzon pool interior it is recommended that you maintain your water between the following levels;

Ideal Ranges
pH 7.2 to 7.8
Total Alkalinity 100 to 200 ppm
Calcium Hardness 200 to 300 ppm

pH - is the measure of the water's acidity or facicity (alkalinity). The scale, while only measured from 0 to 14, is a large scale as it is logarithmic. When the pH is too low it causes faster chlorine loss, eye and skin irritations, equipment corrosion and etching (deterioration) of plaster (concrete based based surfaces) or wrinkling of the vinyl liner. A high pH forms scale, clouds the water, leads to poor chlorine efficiency and creates bather discomfort.

Total Alkalinity - Is the total amount of alkaline materials present in water. Total Alkalinity is a pH buffer - the measure of the pH's ability to change. If too high (above 200ppm), it makes pH hard to adjust. If too low (below 80ppm), the pH will fluctuate excessively.

Calcium Hardness - is the amount of calcium dissolved in water. If the calcium level is too high, the water will deposit the calcium out of solution causing cloudy water, shorter filter cycles, scale formations, blocked pipes and can even damage filtration and heating systems. If the calcium level is too low, the water will draw calcium from the pool surface and equipment, causing corrosion and premature deterioration.

Other Important Terms

Total Dissolved Solids - is the measure of dissolved materials in the water. High TDS causes cloudy water and odours while reducing sanitiser effectiveness. Stabiliser (Cyanuric Acid) - prevents the sun's UV rays from destroying the chlorine. When stabiliser is not in the water, as much as 1.25 ppm of chlorine can be dissipated per hour, making it very difficult to maintain a healthy chlorine level.

Metals - have the ability to stain pool surfaces and discolour the water if not properly controlled or removed. Metals stain because they precipitate out of solution by influences present in the water or acting on the water.

Other Important Factors

Circulation - To maximise the effectiveness of your pool sanitiser it is essential that the pool water is circulated. The more your water is in motion, the harder it is for bacteria and algae to take hold. To ensure your water is well sanitised it is recommended to circulate your water for 10 hours during the day.

Cleaning - Some swimming pools have areas with little or no circulation, commonly referred to as "Dead Spots". Algae and bacteria will often begin to grow in these areas unless you regularly clean and sweep your surface. At least once a week, the walls and floor should be brushed and vacuumed to remove any debris the filter has missed. Even if you use an automatic pool cleaner you must still brush your pool regularly.

Testing - In order to maintain your pool water in balance regular testing is vital. Regular testing will allow you to better understand how bather load, weather and product applications affect the water. Test your water at least two or three times a week using home testing kits, also take regular samples of your pool water to your local pool shop.

Water chemistry can be a highly complicated and specialised field.
For more information visit:
www.bioguard.com
www.ftech.co.uk/~jshep/poolcare.htm
www.poolwerx.com
E-Zee pools info@e-zee.com.au
Or consult a swimming pool professional.