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Thread: Hardness question

  1. #1
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    Default Hardness question

    We just got a new house with a 7500 gal above ground vinyl pool. It was dark green and murky so we drained, cleaned, and refilled. Just tested it and the total hardness was 1000. I have heard that that is not good, but don't know how to fix it. Also, the total alkalinity is 180. How much acid should I add? And do I need to adjust all this before I add chlorine? Thank y'all in advance.

  2. #2
    Watermom's Avatar
    Watermom is offline SuperMod Emeritus Quark Inspector Watermom 4 stars Watermom 4 stars Watermom 4 stars Watermom 4 stars Watermom 4 stars Watermom 4 stars
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    Default Re: Hardness question

    Can you post a complete set of current water testing results taken with a drops-based kit (not test strips)? I would also retest that calcium hardness and make sure your result is correct. As for your question about doing all adjustments before adding chlorine ---- not unless you want a green pool again!

    Welcome to the Pool Forum!

    BTW -- You are lucky your liner is OK. Draining a liner pool totally is a no-no! It can sometimes ruin your liner and make it unusable. I'm glad in your case it seems ok.

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