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How to Maintain Proper Water Balance...
Water Hardness across the United States
Water hardness in the US. Calcium Chloride.
Over 14 gpg   Extremely Hard
10 to 14 gpg   Very Hard
7 to 10
gpg		   Hard
3 to 7 gpg   Moderately Hard
less than 3 gpg   Slightly Hard

gpg = "grains per gallon"

1 gpg ≈ 17 ppm

Remember that the source water for filling your pool can have certain properties that can cause chemical changes as you top off your pool; especially calcium hardness & metals & minerals. 

If your tap water is "soft" or "hard", those chemical make ups, make a difference.  The use of water softeners makes a difference.  PLEASE tell us this information when you contact us so that we can better help you.


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