Is the LSI actually an "Index"?

Is the LSI actually an "Index"?

From Rule Your Pool by Eric Knight

May 6, 2026 · 11 min · Episode 190

About this episode

The episode discusses the listener's clarification that the LSI is not an index but a delta between saturation pH and current pH.

A listener emailed the old ruleyourpool email address (the new one is ruleyourpool@gmail.com) and brought up something interesting. He said "Nowhere in your RYP podcasts have I heard you mention that the LSI is not an index. It's a delta between the saturation pH and the current pH. LSI is the difference between the pH you have and the pH your water wants." Let's discuss this.

People in this episode

Host: Eric Knight

Topics covered

  • LSI
  • pH levels
  • water chemistry
  • pool management
  • listener feedback

Keywords

  • LSI
  • saturation pH
  • current pH
  • pool chemistry
  • listener email

Mentioned in this episode

Organizations: ruleyourpool, ruleyourpool@gmail.com

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