To maintain the correct water chemistry of a swimming pool or a spa pool it is important to know what chemicals to use and understand what they do. Correct use of the chemicals not only keep the pools safe and clean for users, but can also save pool owners time and money.
Traditionally, sanitisers (chlorine) have been used to treat and control algae, but this is proving to be much less reliable as algae species become more diverse and resistant. This leads us to the need for control agents designed specifically to counter the defence mechanisms algae has developed to protect itself. Even if we can’t see them, algae spores are always present and when they become active, they thrive on wastes in the water and dramatically multiply in numbers. It is important to control algae in swimming pools for health, safety and aesthetic reasons. An algae-infested swimming pool is also an expensive and frustrating problem to correct.
Water balance is important as it ensures that the mineral content of the water is in an appropriate state to protect the pool surface and equipment and make water more comfortable to swim in. Water balance is affected by a wide range of variables – the quality of the source water, what chemicals are added to the water, the exposure of the pool to weather conditions and so on. A proper balance of chemical factors such as total alkalinity, pH and calcium, is needed for the sanitiser to work correctly, the water to be pleasant to swim in, and to prevent scaling or corrosion of the pool surface and equipment.
Oxidation removes swimmer wastes and destroys organic contaminants in the water. The aim of regular oxidation is to keep the pool water sparkling and clear of impurities. Oxidation also removes chloramines, which are the result of Free Chlorine reacting with nitrogen-based material in the water. Chloramines are often the cause of skin and eye irritation, and the overbearing smell often blamed erroneously on the chlorine itself.
Salt chlorination has overcome the limitations of hand-dosing through the on-site production of chlorine. Current estimates place salt chlorination in over 75% of all pools in New Zealand and Australia.
Sanitising pool water kills bacteria, which can be harmful to people using the pool. Bacteria is caused by a wide variety of sources such as rain, dust, insects and birds. Sanitiser levels need to be maintained to keep bacteria at bay and also as an aid in controlling algae. BioGuard offers several chlorine based pool sanitiser options, that present a cost effective alternative to liquid chlorine. BioGuard Sanitisers are user friendly, storage and transport friendly, simple to use and very effective in maintaining a healthy pool.
Speciality products are designed to further enhance the swimming experience by: improving swimmer comfort, reducing skin and eye irritation, improving water clarity, enhancing performance of products like sanitisers and oxidisers, helping to prevent the growth of algae. These benefits improve the swimming experience and help to care for and protect your valuable asset – your swimming pool.
Water Balance is important as it ensures that the mineral content of the water is in an appropriate state to protect the spa surface and equipment and make spa water more comfortable to bathe in. Water balance is affected by a wide range of variables – the quality and source of the water, what chemicals are added to the water, the exposure of the spa to weather conditions and so on. Due to the small water volume, raised water temperature and rapid agitation, chemical reactions occur much more rapidly in spas than they do in a swimming pool environment, making water balance even more critical. A proper balance of chemical factors such as total alkalinity, pH and calcium is needed for the sanitiser to work correctly, the water to be pleasant to bathe in and to prevent scaling or corrosion of the spa surface and equipment.
The combination of hot water and heavy use places a high demand on the oxidiser used in a spa. Even over a short period of time, spas can accumulate substantial waste material from a variety of sources, including the bathers themselves, animals, insects, pollutants and the general environment. These wastes cause the same problems that swimming pools suffer from, such as dull, cloudy water that’s irritating to the skin and eyes with an increased incidence of resistant algae. Regular oxidation is needed to break these wastes down. Due to their minute size, the particles that sometimes result are not capable of being filtered out without some form of clarifier.
As in a swimming pool, sanitation or disinfection plays a crucial role in spa to treat bacteria. The combination of heavy use and hot water places a tremendous burden on the sanitiser used. Whatever the source, all of the billions of micro-organisms present in a spa need to be killed in some way and as quickly as possible. To do this, a sanitiser must be continually present in the water in a measurable residual amount. Whilst other sanitiser options are available, chlorine and bromine are the two main chemicals recognised by Health Authorities as providing the necessary level of safety for bathers.