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    What did I do wrong?

    I recently started a business servicing pools. I was called to a green pool, tested it and found these results: pH - 7.8 FC - 0, TDS 1200, Cyanuric Acid 180... So I figured that high cyanuric acid was locking out any chlorine, and surely the only way to lower CA is to dilute it? Same for TDS...
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    Hi from the UK

    Hi, I'm new to the forum, just thought I would introduce myself. I started my own swimming pool maintenance business last year, and so far it's going really well. I've worked with pools for almost 6 years now in one way or another (started off as a lifeguard!) and thought I would take a chance...