Hard Water Allowed to Dry on Circ. P Filter

Started Jul 15, 2013 | Questions thread
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Photo Thoughts Regular Member • Posts: 268
Re: Hard Water Allowed to Dry on Circ. P Filter

Most of the deposits likely are calcium carbonate, as suggested.  I agree that an acid like vinegar will remove them, but I'm not sure what they might do the filter.  I agree with trying some very pure water first as a rinse.  Distilled might do the trick, as would the output of a good RO/DI system.

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