pHin Test Strip Results

Total Alkalinity

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Total Alkalinity (TA) is the measure of water's resistance to change in pH. Total alkalinity acts a pH buffer which can help keep your pH from drastically moving up and down. Keeping your total alkalinity in-range will help reduce pH fluctuations. Your pool or hot tub should have a total alkalinity between 80 ppm and 150 ppm


Low Total Alkalinity, less than 80 ppm

Low total alkalinity can make water acidic which will corrode pool surfaces and equipment. Low total alkalinity also makes it hard to increase pH. To raise total alkalinity, you'll need to purchase a total alkalinity increaser and carefully follow the dosage instructions to reach 100 ppm. Sometimes pH up chemicals can also be used to adjust total alkalinity. You'll need to carefully read the labels of any pH up chemicals to ensure they can be used to adjust total alkalinity.
 

High Total Alkalinity, greater than 150 ppm

High total alkalinity can make pool water appear cloudy and cause scale deposits to form. High total alkalinity also makes it hard to decrease pH. To lower total alkalinity, you'll need to purchase a total alkalinity reducer and carefully follow the dosage instructions to reach 100 ppm. Sometimes pH down chemicals can also be used to adjust total alkalinity. You'll need to carefully read the labels of any pH down chemicals to ensure they can be used to adjust total alkalinity.
 

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