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How To Lower Total Alkalinity In Your Swimming Pool

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When you own a pool, you must keep the water safe and clean which involves balancing the total alkalinity (TA), or total amount of alkaline substances in the pool water like bicarbonates. Keeping alkalinity low helps you avoid unnecessary repair costs from damage to pool equipment like liners or plastic fixtures and it will prevent skin irritation. Here are some tips to lower pool alkalinity.

Test the Water for Total Alkalinity

The ideal level of total alkalinity (TA) in a concrete pool should be between 80 and 120 ppm, or parts per million and the ideal TA level for vinyl and fiberglass pools is between 125 ppm to 175 ppm. The simplest way to test total alkalinity is to buy a strip test kit form a pool supply store.

To do the strip test, submerge the strip from the kit around 18 inches into the water and follow the instructions on how long to leave it there. When you complete the test, the strip should resemble the color of the strip in the kit.

Measure the Chemicals

To lower TA, you will need either sodium bisulfate or muriatic acid, a bucket, safety glasses, and gloves. Turn off the pump and wait until the water stops moving. Measure the chemical of your choice according to the directions for your size and type of pool.

Though the suggested measurements will differ by manufacturer, a common treatment for 10000 gallons is 24 ounces of dry acid or 20 ounces of muriatic acid which will decrease TA by 10 ppm. If you use muriatic acid, dilute the suggested amount for your size pool in a bucket of water and pour acid into the water for safety purposes.

Add the Chemicals and Retest TA

Pour the chemical in the deepest end of the pool. If your pool is small without depth change, pour the chemical near a water return to quickly spread it in the water. Position yourself over the deck in an in-ground pool or bend over an above-ground pool close to the water without touching it to pour the chemical.

Turn the pump back on one hour after applying the chemical. Give the chemical between six and 24 hours to set and do the strip test again. You may have to keep treating the water until the ideal TA is reached.

Lowering the alkalinity in your pool doesn't require great skill as long as you follow safety procedures. If your pool has been damaged because of low alkalinity levels, contact a pool repair service like Guaranteed Pool Service & Repair.


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