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Chlorine Stabiliser

 BOAST Pool Water Management System

 

Chlorine Stabiliser Although stabilising chlorine loss to sunlight isn’t one of the properties that make up water balance, we feel this is the best place to talk about it because while you are getting your pool water balanced and ready for use, now is a good time to add chlorine stabiliser if it is required.

 

One of the major reasons for chlorine loss from swimming pools is that it is drawn out of the pool by the UV rays of the sun.  Adding chlorine stabiliser to an outdoor pool at the start of the swimming season will substantially reduce the amount of chlorine lost to sunlight, saving you money.

 

Many of the chlorine donors used to treat the pool water already contain stabiliser, we would therefore recommend that you get the level tested by your Blue Horizons supplier before adding any more.  The ideal chlorine stabiliser level is 60mg/l, if the level in your pool is less than this use Blue Horizons Chlorine Stabiliser tablets or granules to increase it.

 

Blue Horizons Chlorine Stabiliser Dose Rates Table

Pool Volume Chlorine Stabiliser Tablets Chlorine Stabiliser Granules  
 Cubic Metres Litres   Gallons  10mg/l  30mg/l  10mg/l  25mg/l  60mg/  
4.55 M3  4,545  1,000  N/A  N/A  45g  113g  271g  
11.36 M3  11,364  2,500  N/A  2 tablets  113g  283g  678g  
22.73 M3  22,727  5,000  1 tablet  3 tablets  225g  563g  1.36Kg  
45.45 M3  45,455  10,000  2 tablets  7 tablets  450g  1.12Kg  2.71Kg  
 68.18M3  68,182  15,000  3 tablets  10 tablets   675g  1.68Kg   4.07Kg  

 

If the chlorine stabiliser level is greater than 200mg/l it is time to drain some of the existing pool water out of the pool and top it up with some fresh water to lower the level.  As with T.D.S. levels, frequent top ups with fresh water due to regular backwashing will help to keep the chlorine stabiliser level from rising too high. Remember that water balance can change with dilution of the pool by rainwater, the introduction of fresh water to top the pool up, the chemicals used to oxidise and sanitise and by the bathers using the pool – so keep checking the levels throughout the swimming season.