A swimming-pool worker wants the pool's pH to be 7.2. She comes by to test the water and finds that the pH is 8.2. What should she do to correct this situation?

A swimming-pool worker wants the pool's pH to be 7.2. She comes by to test the water and finds that the pH is 8.2. What should she do to correct this situation?
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If the pH is higher than she wants it to be, she gotta add acid. If it too low, add base. :p Apex
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