Using Chlorine Granules for Pool or Spa Maintenance  

by Pool Builders on 11-25-2012 in Articles

There is always some maintenance and repairs to be exercised on swimming pools. Outdoor pools are subjected to the direct sunlight which encourages the rapid growth of algae. The green color of the pool waters indicates the level of algae present in the pool.

Keeping the pool clean of algae and other bacteria is crucial to the safety of the swimmers or users of the pool. One of the more common ways to clean a large pool is to use chlorine which can be in liquid or granule form.

Selection

One can choose chlorine granules in maintaining the pool although care must be exercised with the necessary precautions in applying and handling the granules. Chlorine in any form should be stored away carefully until it is used. The proper handling procedures should be applied to avoid undesired effects on the handler or bystanders.
Chlorine granules are scientifically known as sodium dichloroisocyanurate. It offers 56% strength in granule form. It is a common choice to sanitize pools and spas as well as a shock treatment for small pools that are above the ground.

Dosing Instructions

It is easy to apply chlorine granules to the pool as the dosage is easy and straightforward. Adding chlorine granules to the pool helps increase the free chlorine level inside the pool to kill off the presence of algae. The common dosage is 100 grams for every part per million in every 50 cubic meters of water which is 10,000 gallons.

A shock dose would require an additional 750 grams for every 10,000 gallons; a double or triple dosage is required for the same effect if algae presence is detected.

The mixing of the chlorine granules is very straightforward. The granules of chlorine can be dissolved in warm water using either a plastic bucket or skimming basket. A feeder or dispenser can be used if it is specially allocated for such purposes instead of being a multi purpose container; else a thorough washing is required.

Spas can also enjoy chlorine granules with a slightly different dosing. The level of free chlorine in the spa water should be increased by adding 5 grams for every 2.5 parts per million. It is common to add only one teaspoon of granules of chlorine for every person using the spa. Such a dosage would maintain the level of chlorine to the right level of 2-4 ppm with a desired 7.2-7.6 pH level in the spa. A feeder or dispenser can be used if it is specially allocated for such purposes instead of being a multi purpose container; else a thorough washing is required.

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