(Video) 5 Pool Chemical Tests You Must Perform Weekly

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Pool chemical tests should be scheduled each week on your pool water. You can easily perform these pool chemical tests yourself. Or you can take a water sample to your local  pool store for testing. Another option is to have a pool  care professional perform the pool chemical tests. 

Pool Chemical Tests to Perform Weekly 
⦁ pH
⦁ Total Alkalinity
⦁ Calcium Hardness
⦁ Cyanuric Acid

What are the recommended levels for these swimming pool tests?

pH  7.4-7.6

The pH chemical level is very important to maintain. A pH imbalance can cause damage to the pool equipment. The pH measures  the acidity of the pool water.  To raise the pH add Soda Ash. Muriatic acid is commonly used to reduce the pH level. As the pH rises the chlorine’s disinfecting ability goes down.

Chlorine  1.0-3.0 ppm

Chlorine & pH are the most frequent tests performed . Chlorine is a disinfectant. It kills the germs & algae.  Chlorine comes in gas, liquid, & granular  tablet form, with liquid being the most commonly used.


Total Alkalinity  80-140 ppm

Total Alkalinity is the value of the alkaline material in the pool water. Alkaline acts as a buffer for the pH. Depending upon the reading, you will add an alkalinity increaser such as Sodium Bicarbonate to raise the alkalinity or Muriatic Acid to lower the alkalinity.

Calcium Hardness  200-400

Calcium Hardness is another pool chemical to test weekly. The calcium content in the pool water occurs naturally. Soft water & hard water are terms used to indicate the amount of calcium in the water.   To raise calcium hardness you will use Calcium Chloride. If the calcium hardness becomes extremely high you will need to drain off some of the swimming pool water and add fresh water to dilute it.

Cyanuric Acid  25-50 ppm

The 5th pool chemical to test is Cyanuric Acid. Cyanuric acid is a stabilizer.  It helps protect chlorine from being destroyed by the sun’s ultra violet rays. Like us on Facebook @ https://www.facebook.com/BetterPoolsLLC/

Happy Swimming!

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