Stabilised Chlorine Swimming Pool Chemicals

Stabilised Chlorine Swimming Pool Chemicals -

In order to stop chlorine being broken down by sunlight it is combined with a stabiliser - cyanuric acid.
Cyanuric acid can be added separately or more commonly it is supplied as stabilised chlorine granules or tablets
The problem with all stabilised chlorine products is that as well as stopping the sunlight breaking down the chlorine they also make the chlorine less effective. Therefore it is important not to get too much cyanuric acid in the water.
There are two forms of stabilised chlorine
- Stabilised Chlorine Tablets (sodium dichloroisocyanurate) - This is a white tablet which adds chlorine to the water just like any other sanitiser but it also adds stabiliser at the same time. It has a pH close to neutral (7) so that it will have little effect on the pH of the pool water. It is added by dissolving the required quantity in warm water. 60 grams will add 1 part per million chlorine to each 45 cubic metres (10,000 gallons) of pool water.
- Stabilised Chlorine (Trichloro isocyanuric acid) - This is normally supplied as a 200 gram tablet which adds chlorine to the water just like any other sanitiser but it also adds stabiliser at the same time. It is acidic so it will reduce the pH of the pool water making it necessary to add an alkalinity builder to the water to prevent corrosion or the attack of concrete or tile grout. The tablets are slow dissolving. They are usually put in the skimmer to dissolve over several days. One 200 gram tablet will add approximately 4 parts per million of chlorine to each 45 cubic metres (10,000 gallons) of pool water, this might seem a lot in a small pool but remember, it is dissolving slowly
Hint: Add Chlorine in the evening instead of the morning, as this can halve your chemical costs.
Why? At night, chlorine is used up doing useful work in your pool, like oxidizing all the sweat and sun-tan lotion from your pool party. During the day, it is mostly wasted -- lost to the UV in the sunlight. Depending on stabilizer levels, and sunshine, you can lose half the chlorine in the pool in as little as 30 minutes! Even when your swimming pool is stabilized, you can lose half the sanitizer in 4 hours. But, at night, all of the chlorine used is doing something useful to your pool water!

Our main aim is to help you have many years of happy usage from your swimming pool and this care giude should only be used as a general guide for more information on caring for your swimming pool please contact us now!