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    Clean my ~90 foot pool and calcified natural rocks

    I am interested in what the end result of this project was? I am considering doing the same using Kieserite. Can you vacuum straight to waste as the media will be very fine?
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    Calcium Hardness

    Yes, excellent site. Glad to be a member. For your answer to #2 above, that is exactly what happened. The scale is above the line. Any recommendations to keep this in check. Also, for #3, if I am topping off with water that is 150 ppm. Should this not effectively lower CH? Any other...
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    Calcium Hardness

    Just opened a newly installed pool the first week of February 2014. Started using the test kit provided by the pool builder but it only tested for Chlorine/PH/Alkalinity. Purchased a new kit which also tested for CH & CYA. However, I questioned the results of the testing using this pool kit...