How does the water in your own pool stay clear and clean?

Shock chlorination after letting in the pool water

Fresh water from the tap should also be chlorinated after the pH value has been set. The expert from Nohra near Weimar speaks of so-called shock chlorination. All unpleasant creatures in the water, such as bacteria, are thereby killed. Then a dosing float with a commercially available combination tablet must be added to the water. This tablet regulates the chlorine content, kills algae, disinfects the water, regulates the pH value. Now the pool owner only needs to check the water values ​​regularly, i.e. at least once a week. And very important: Always refill with fresh water, because the sun’s rays evaporate the water. This can prevent the pool water from becoming cloudy or milky.

Remove coarse dirt by hand

If you don’t want to afford fully automatic pool cleaning, you can do it by hand. The usual basic equipment includes, among other things, a landing net, scrubber, sponge and rag.

You should regularly remove coarse dirt such as flowers, leaves, blades of grass or even dead insects and animals with the net. The pool should also be covered when not in use. You should also remove limescale deposits and neutralize any algae growth that may arise using appropriate means.

Switch on the filter system regularly

The invisible contamination of the water, such as skin residues, dirt particles or fine suspended and suspended matter, is removed by a filter system. It should be switched on regularly – Sebastian Rausch recommends running the system at least twice for several hours on warm days. Especially at lunchtime when the water is very warm. Since every filter becomes clogged, you will need to change it regularly.

Water purification with chlorine

Chlorine as a disinfectant has established itself in public outdoor pools and private pool facilities because it is easy to use. The average chlorine content in private swimming pools is between 0.5 and 1.0 milligrams per liter, and slightly more at higher temperatures. How much has to be entered depends on the pH value, the degree of hardness of the water and the volume of the water to be cleaned. Chlorine tablets are available commercially.

Bromine and active oxygen as alternatives to chlorine cleaning

Bromine is very similar to chlorine in terms of its chemical composition and therefore also resembles it in terms of its disinfecting effect. However, it’s not quite as effective. A combination of bromine and chlorine is therefore usually used for pool maintenance.

The hydroxyl radicals released in the active oxygen (known as hydrogen peroxide) also kill germs and bacteria of all kinds effectively. The end products of the chemical reaction are water and oxygen. Oxygen granules and an activator are required for this, both components usually come from the same manufacturer. Depending on the pool size, a certain amount of granules is required, which is then mixed with the corresponding amount by the activator. The exact quantities can be found on the respective products. Both are then put into the pool water together, it is advisable to do this near the pump so that the substance is well distributed.

Cleaning with active oxygen is a little more time-consuming than simply taking a chlorine tablet, but it is easier on the (slime) skin and hair.

Natural swimming pond and natural pool as environmentally friendly alternatives

An alternative to chemistry is biological purification using plants. This can be done either in a natural pool or in a swimming pond, the natural pool being the much more expensive variant.

The principle in a swimming pond is based on nature. The main work is done by aquatic plants, bacteria and animal organisms. There is a shallow clearing or regeneration zone in which the aquatic plants grow and a deeper zone that can be used for bathing. A swimming pond should definitely have a depth of at least two meters. It should also be at least 50 square meters, whereby larger ponds between 100 and 300 square meters are easier to keep in ecological balance than small bodies of water.

Take care when disposing of chemically treated pool water

Water treated with chemical additives must not enter the natural water cycle, but must be disposed of via the sewer system. It may only be disposed of in the garden if the chlorine content is below 0.05 milligrams per liter and there are no other chemical substances in the water – provided it is not located in a groundwater protection area. It is best to find out about the regulations of the respective water protection authorities that apply in your area.

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