Frequently Asked Questions

 If you have questions about swimming and pool chemicals, you’ve come to the right place! CHEMPOOL assembled this broad list of frequently asked questions about pool chemicals  to help you.

Do you have questions about swimming & pool chemicals? You’ll find answers to many frequently asked questions in our blog. Start by clicking on one of the following categories or search through our existing answers by entering keywords .

Yes! Chlorine is designed to kill the majority of germs that could potentially make people ill. However, sunlight, dirt, debris and human body oils can also break down the chlorine concentration. It is important to check your chlorine levels regularly to ensure hygiene, and oxidise regularly to remove the contaminants that would break down chlorine.

We recommend storing your chemicals in a dry, clean, cool and well-ventilated area away from sunlight and children. Ensure all liquid chemicals are upright. When handling, carefully read and follow the instructions on the label. In case of spillage, flush away with large quantities of water, avoiding contact with eyes and skin. Always ADD chemicals to water, NOT water to chemicals and do not mix chemicals with one another.

Poorly treated water can be a health threat, whereas appropriately treated and sanitised water will provide you with a healthier and more visually appealing pool. Furthermore, out of balance water, particularly if left for too long, can cause expensive damage to the pool surface and equipment in the long run. Below is a list of our recommended water balances:

pH 7.2 – 7.8 (Ideally 7.4 – 7.6)

Alkalinity 80-150ppm*

Calcium hardness 175-250ppm

Free Chlorine 1-3ppm

Free Bromine 3-5ppm

*Depending on surface

The most popular sanitizer for cleaning pools and spas is chlorine. It is offered as a liquid, granule, pill, or stick. Chlorine eliminates bacteria, pathogens, and algae that might contaminate your pool and make it dangerous. Chlorine’s chemical relative, bromine, has a comparable impact.

Shock is liquid or granular chlorine. You should add one gallon (or one pound) of shock per 10,000 gallons of pool water every week to two weeks. During hot weather or frequent use, you may need to shock more frequently.

What not to mix together when adding pool chemicals. Chlorinating agents such as Trichlor and Cal Hypo should never be mixed together or in the same feeder as this can lead to an explosion. Despite being chlorinating agents, they are incompatible. Do not add at the same time or mix muriatic acid and chlorine

The general consensus for how long chlorine will stay in an outdoor swimming pool is four and a half days, after which the chlorine is depleted to an immeasurable level. However, there are several factors that can speed up its depletion.

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