Reducing chlorine levels in the pool: chlorine levels explained

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Table of contents

  • Chlorine levels explained
  • keep patience
  • Remove cover
  • use
  • Check pH
  • water exchange
  • find cause
  • Bring in chlorine neutralizer
  • frequently asked Questions

Is the chlorine level in the pool too high and bathing is not possible? Then good advice does not have to be expensive, because the chlorine values ​​can be easily reduced in several ways and thus brought into the optimal range.

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Chlorine levels explained

Proper pool care includes aiming for and maintaining the correct chlorine level. The following areas are important:

  • below 0.5 milligrams per liter is considered too low
  • 0.5 to 1.0 milligrams per liter are considered the optimal range
  • from 1.5 milligrams per liter the value is considered increased
  • from 10 milligrams per liter are greatly increased

There is no upper limit for the private sector. Even 10 milligrams per liter are used in public swimming pools, for example, if they are heavily used. Red eyes, very dry skin and respiratory problems can be the consequences of such a high concentration. It is therefore better to stay in the optimum range.

keep patience

Chlorine is consumed in the pool water and evaporates. If the supply is interrupted, the salary will therefore drop over time on its own and without any action. Crucial points for a quick lowering are:

  • incoming or carried-in dirt
  • high temperatures
  • UV exposure

In the case of slightly to strongly increased values ​​of 2.0 to a maximum of 10.0 milligrams per liter, the chlorine value can drop to the optimum within a few days. Intervention is not necessary.

large tablet for pool

Remove cover

Since UV radiation, temperature and contamination play a crucial role in the consumption of chlorine and the If the level is too high, the cover should initially be left out become. Dust, sun and evaporation accelerate subsidence.

use

As long as the chlorine value is only slightly higher, the pool can usually continue to be used without any problems. A maximum value of 10 milligrams per liter serves as a guide.

Sensitive people should rather refrain from this. Possible consequences are irritation of:

  • respiratory tract
  • Eyes
  • skin
  • mucous membrane

For everyone else, bathing is a great way to quickly lower chlorine levels. Sunscreen, dander, dust and other carried-in particles react with the chlorine and use it up faster.

Check pH

Chlorine is only consumed when the pH of the water is in the right range. Otherwise it cannot become active and the value remains too high. 7.0 to 7.4 are optimal. If this is not reached in the pool water, an adjustment must first be made. After that, the chlorine value drops by itself.

Tip:

If the water smells strongly of chlorine, but still becomes cloudy or discolored, the wrong pH value is usually responsible. Regular inspection should therefore be part of pool maintenance.

water exchange

If safe bathing in the pool is not possible due to the high chlorine content, a proportionate water exchange can make sense. How much the chlorine value drops depends on various factors. These are:

  • exchange amount
  • pH value of the incoming water
  • cleanliness
  • temperature
  • cause of overchlorination

Therefore, it is not possible to predict with certainty whether the chlorine level will drop by 25 percent if 25 percent of the water is changed. Multiple re-measurements are therefore required here.

Chlorine dispenser in the pool

find cause

A too high chlorine value in the pool always has a cause. This should be found and turned off to avoid repeated over-chlorination. This saves effort and time. In addition, the budget and the environment are protected. Possible reasons for a surprisingly high chlorine content are:

  • wrong setting for automatic chlorination
  • wrong pH value
  • Error in measuring or calculation
  • temperature too low
  • chlorination intervals too short

Regular measurement of chlorine and pH can already help to adjust the doses better and should therefore be part of the basics of pool maintenance.

Tip:

If the cause is an overdose due to automatic chlorination, this should be switched off immediately and then adjusted correctly. Adjustments are necessary for other triggers.

Bring in chlorine neutralizer

So-called chlorine neutralizers are special agents that combine with the chlorine and make it inactive. They should only be used if there is a very strong over-chlorination with more than 10 milligrams per liter and the cause has already been found and remedied if necessary and the other measures are not having the corresponding success rendered. The funds only make sense if the pool must be usable again as soon as possible.

Tip:

When dosing, it is worth starting with very small amounts and measuring the value again and again. Because once the neutralizer has been added, adjusting it by adding chlorine afterwards is time-consuming and difficult.

frequently asked Questions

Why are chlorine levels higher in swimming pools?

Because the use here is much stronger. More chlorine is therefore needed to neutralize the amount of particles and to maintain hygienic values.

How fast does the chlorine value drop?

Precise information on the duration is not possible because it depends on several factors. High temperatures, direct sunlight and not having a cover all contribute to a drop in chlorine levels, as does extensive use.

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