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Things to Know: Pool Chemical Levels and Chemical Charts

Jul 16, 2018

Having a swimming pool in your backyard has many perks – cooling off on hot summer days, playing games with family and friends, floating around relaxing with your favorite beverage…

…but, it also has a number of responsibilities, including making sure that your pool chemical levels aren’t off the charts and that they fall in the right part of the charts. We’re sharing details from In the Swim’s blog post, Pool Chemical Levels and Chemical Charts, so that you can be an expert at keeping your swimming pool chemical levels exactly where they need to be.


Pool Chemical Levels

These are the ideal levels for pool chemistry, or the most acceptable range for proper pool water chemistry. These are the average ideal ranges, however there are times when it can be desirable or necessary to operate outside of one or more of these ranges.

pH – 7.4 to 7.6
Total Alkalinity – 80 to 120 ppm
Calcium Hardness – 200 to 400 ppm
Cyanuric Acid – 20 to 50 ppm
Free Chlorine – 2.0 to 4.0 ppm


Pool pH Chart

Use this pool pH dosage chart to determine the correct amount of pool pH adjustment chemical to add for a desired change in pH level. A low pH of 7.1 is desirable for shocking and sanitation, but 7.4 is best for swimmer comfort, surface protection and overall water balance.

Pool Total Alkalinity Chart

Use this pool Alkalinity dosage chart to determine the correct amount of pool alkalinity adjustment chemical to add for a desired change in total alkalinity levels. Alkalinity buffers pH, too little Alkalinity makes pH erratic, and too much makes pH resistant to change. Use pH Reducer to lower Alkalinity and Alkalinity Increaser to raise the level.

Pool Calcium Hardness Chart

Use this pool Calcium Hardness chart to determine the correct amount of pool calcium to add for a desired change in hardness levels. To lower pool water hardness, the solution is dilution! If your water has less than 200 ppm of total hardness, add Calcium Increaser.

Pool Shock Treatment Chart

Use this pool shock dosage chart to determine the correct amount of pool shock treatment. 30 PPM chlorine shock chart for killing algae and bacteria, and the 3.0 PPM super chlorination chart, used for cloudy water, after rain or heavy use, or low chlorine levels.

Pool Stabilizer Chart

Use this pool stabilizer dosage chart to determine the correct amount of Cyanuric Acid stabilizer or conditioner to add for a desired increase. To lower stabilizer levels, the solution is dilution! If you use stabilized pool chlorine tablets, you will add 10 ppm per month.

Next Steps

Now that you’ve read about the various pool chemical levels you should be keeping up with, you have two options for next steps:

  1. Click this link and type Ctrl-P for a printer-friendly pool chemical chart you can keep with you.
  2. Leave the details to the professionals! Call Crystal Clear Pools and Spas at (512) 339-9304 today to schedule an appointment with a swimming pool specialist.

To see In the Swim’s full blog post, click here.


About Crystal Clear Pools and Spas

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With over 32 years serving Central Texas, Crystal Clears and Spas provides a superior experience in pool repair, pool cleaning, pool renovation, and pool maintenance. Our swimming pool and spa services extend to most communities in the Greater Austin area, including Buda, Cedar Park, Georgetown, Kyle, Lakeway, Pflugerville, Round Rock, Westlake, and other surrounding areas.

Whether you need a new swimming pool, want to renovate an old pool, or are looking for an immaculate pool cleaning, we’re the experts to call. Our goal at Crystal Clear Pools and Spas is to make it so that all you need to do is swim, relax, and enjoy! We are thrilled to make service calls to provide premier quality pool cleaning and system maintenance wherever and whenever you need us.

Follow us on Twitter and like us on Facebook for information on keeping your swimming pool ready for fun with ideas for pool parties, pool maintenance, pool safety, and pool exercise along with a few pictures of cute animals swimming in pools.


Call Today to Meet with a Crystal Clear Pools and Spas Swimming Pool Specialist (512) 339-9304 and EXPERIENCE THE CLEAR DIFFERENCE!

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