Talking Pools Podcast
Talking Pools Podcast
Rudy Stankowitz
Range Chemistry & the LSI Reality Check
45 minutes Posted Feb 27, 2026 at 12:00 pm.
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Show notes
Pool Pros text questions here This Friday episode digs into one of the most argued topics in pool care: range chemistry and the Langelier Saturation Index (LSI). Rudy takes us back to 1936 and the work of Wilfred F. Langelier, who developed a model to prevent municipal water pipes from dissolving or scaling shut. LSI was never designed for swimmers. It was built to answer one simple question: Will this water dissolve calcium carbonate… or deposit it? That’s it. Pools adopted LSI later because...