The Pools Scientific Podcast
Your test strip shows chlorine. The water looks clear. But is your chlorine actually working? In this episode, chemical and nuclear engineer John Cooper breaks down the relationship between cyanuric acid (CYA) and free chlorine — and the single ratio that determines whether your sanitizer is doing its job. It's called the 7.5% Rule, and most pool owners have never heard of it. John covers what CYA is, why it belongs in your pool, how it quietly blunts your chlorine's effectiveness as it accumulates, and what to do about it. You'll leave with a specific free chlorine target calculated for your actual pool — not the generic number on the label. Show notes and the full CYA-to-FC reference table: PoolsScientific.com Subscribe for new episodes every Tuesday. Show notes and free resources at PoolsScientific.com. Subscribe to the weekly email list for episode updates. Ebooks available at payhip.com/poolsscientific. Follow us on Instagram @poolsscientific24. The Pools Scientific Podcast is produced by Pools Scientific LLC — Elevated Pool Care Through Science and Technology.
10 episodios
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