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Hardness Low?, Foaming Problem?


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Can the hardness in a spa really be too low?

My water is relatively soft (zero hardness in titration tests, about 100 ppm on a strip indicator), and my biggest recurring problem is foaming. I saw somewhere (don't recall where) that low hardness increases foaming.

Have others heard this?

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Guest hottub.pool_boy

harder water foams less. too much calcium hardness (+200ppm) and you run the risk of clouding spa. hot water does not hold calcium in solution like cool water. foaming comes from a number of sources. Family members who take bathes, instead of showers, dunking hair in spa water, wearing clothing in spa-lots of soap left in clothing, don't wash swim suits after each spa use. skin lotions, moisturizers, etc.

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