hth alkalinity increaser, 5 lbs., raises total alkalinity in swimming pool water. The ideal alkalinity range is 60-120 parts per million. If the total alkalinity is too low, pH will fluctuate excessively.

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hth alkalinity increaser, 5 lbs., raises total alkalinity in swimming pool water. The ideal alkalinity range is 60-120 parts per million. If the total alkalinity is too low, pH will fluctuate excessively.

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