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Swimming pools

Pool maintenance, swimming pool problems, pool water problems and swimming pool help.

Cloudy swimming pool water problems

Cloudy swimming pool water should be dealt with according to the reason for the cloudiness.

If the swimming pool water is milky, it is advisable to have the level of stabiliser (cyanuric acid) tested. A level of over 80ppm in the pool water is likely to lead to "chlorine lock" which can turn the water milky. If the problem is the stabiliser, you will need to drain some of the swimming pool water and refill with fresh water to bring the stabiliser level down to 30-50ppm. To avoid the level getting out of control, use a non-stabilised chlorine product such as calcium hypochlorite.

Adding large amounts of this same chlorine (calcium hypochlorite) can cause the calcium level to rise and this may result in either scaling or cloudy pool water if the pool water balance has a scaling tendency. The level of calcium hardness should ideally be between 200ppm and 400ppm.

If the cloudy pool water is caused by an excessive amount of dust or pollutants in the water, you may have to use a flocculant (also known as a coagulant or clarifier). The flocculant clumps the pollutants together allowing them to be trapped by the filter or causing the clumps to settle on the bottom of the pool from where they can be vacuumed. If the swimming pool has a regular tendency to become cloudy, it is suggested that you check the filter medium. In the case of sand filters, it is necessary to change the sand at least every 5 years to ensure efficient filtration. The pool sand filters generally use quartz, but nowadays zeolite minerals are becoming more popular.

Zeolite, particularly clinoptilolite, is able to trap particles as small as 3 microns, resulting in filtration comparable to that of a DE filter. Zeolite is also able to absorb metals, ammonia and nitrates, all of which pose a problem for swimming pools.

Happy swimming.
      -  Larry Katz  [Sunday, January 25, 2004]

Cloudy pool water - pool problems

Cloudy swimming pool water can be the result of one of a number of factors.

The cloudy pool water could be caused by an excessive amount of dust or pollutants in the water.

High doses of pool chemicals such as calcium hypochlorite (unstabilised or shock chlorine) can cause a high salt level in the pool resulting in cloudy, milky pool water.

Milky pool water may also be from an excessively high stabiliser (cyanuric acid) level in the swimming pool.

If you have cloudy pool water, the first step is to determine the cause before attempting to solve the problem and clarify the pool water.

Happy swimming.
      -  Larry Katz  [Thursday, January 15, 2004]

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