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, ______ units of lifesaving equipment must be provided for any pool
which exceeds_______ square feet of surface area.
pH level must be between _____ and _____.
If fecal contaminati9on occurs in a wading pool or spa you should
_____________________________.
How many hours a day must the pump operate?
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pH level must be between _____ and _____.
7.2 and 7.8
Water temp of a heated pool does not exceed _______.
90 degrees F