Pool water looks great, chlorine content is good, pH is balanced, but total hardness is exceeding 1000
Question:
Pool water looks great, chlorine content is good, pH is balanced, but total hardness is exceeding 1000 g/mL.
What is happening? What do you do about it?
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Related Book For 
Professional Management Of Housekeeping Operations
ISBN: 9780471268949
4th Edition
Authors: Thomas J. A. Jones, Robert J. Martin
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