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The water should contain chlorine in order to kill germs. You won't know who or what might land in your pool.

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Q: What to add to water in swimming pool when replacing with new water?
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Related questions

Why add hydrochloric acid to swimming pool?

Reduces alkalinity of swimming pool water (softens hard water)


Why it is necessary to add chlorine to swimming pool water?

It is necessary because the chlorine kills all of the germs that enter the swimming pool.


How do you raise the cyanuric acid level in pool water?

Remove some water in container (10-20%) and add new water. example: pump water high in cyanuric acid out of a swimming pool and the add fresh water to the pool.


Can you add sodium bicarbonate to a swimming pool while people are swimming in it?

You shouldn't add chemicals to a pool in which people are swimming. Add the chemicals, ensure that you've made the correct adjustment to the water chemistry and that the water is safe, and then allow people back in. To be honest, it probably wouldn't hurt them - but it wouldn't be wise.


What do you do if you have too much salt in your swimming pool?

Drain some water out, a little at a time, and add fresh water.


If you have a good alkalinity with mains water what would lower it in a swimming pool with out the addition of chemicals.?

Add rain water this has very low alkalinity


How do you treat water hardness in swimming pool?

just add orange juice, watermelon and of course some pig trotters!


Can you add optimizer plus to a pool with the solar cover on?

It's not possible to add optimizer plus to a pool with the solar cover on. You will need to remove the solar cover from part or all of the pool in order to put optimizer or other pool treatment products into your swimming pool water.


How do you increase swimming pool water acidity?

Usually you would add muriatic acid to adjust the pools acid level.


How do I know the amount of swimming pool chemicals I need for my home swimming pool?

You will need to add an amount of chemicals that is proportional to the size of your pool. The containers of the chemicals should tell you how much to add for the size of pool you have. It might be better if you take a sample of water to a local pool supply store, so that they can tell you exactly what you need for your specific pool. http://www.ehow.com/about_5390392_chemicals-put-new-pool.html


Cloudy and greenish looking water in vinyl swimming pool?

Shock treatment for the green part. If it is still cloudy you can add a clarifier sold at your local pool supply.


how to test hte water from swimming pool?

You can purchase testing strips which will indicate your pool water's levels of chlorine, pH and so on. With this information, you can determine which chemicals you need to add, and in what amounts. Visit a pool supply store to get the supplies.