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The content of combined chlorine in my swimming pool/pool is too high (> 0.2 mg/l).

Possible cause:

High organic loads in the water, insufficient or too infrequent backwash with an appropriate addition of fresh water, poor or inadequate flocculation.


Prolong the filter backwash time and/or shorten the filter backwash intervals. Ensure a proper flocculation, use the POOL IZEI additive to degrade combined chlorine. On the system side, the formation of combined chlorine can be reduced by installing a UV system (dinUV-PREVENT), an ozone system (din-o-zon, Optozon), a powdered activated carbon system (Carbonflow, Carbondos), or a carbon layer on the filter bed. Please check your filter speeds.

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