Episode 1 · April 21, 2026 · Launch Episode

Why Pool Care Is a Science Problem

Solo Teaching · Target Runtime: 35–42 minutes

Episode Overview

Most pool owners think the job is keeping the water clear. That’s not wrong — but it’s not the whole picture. And the gap between that answer and the full picture is where most pool problems live.

In this launch episode, John Cooper introduces the Pools Scientific Podcast, explains why pool water is a genuine chemical system — not a guessing game — and makes the case for why understanding the science changes everything about how you care for your pool.

In This Episode

John opens with a story from the field — a service call that ended with him staring at something he’d never seen in a residential pool installation. It’s a story about trust, about standards, and about what happens when the person doing the work doesn’t know what they don’t know. It sets up everything that follows.

Before the science comes the credentials. John explains who he is and why his background — nuclear engineering, chemical engineering, submarine service, five PHTA certifications — shapes how he looks at pool water. Not a resume recitation. Context for why the scientific framework matters.

Then the core of the episode: why pool care is actually a chemistry problem. John introduces the Langelier Saturation Index — the single most important number most pool owners have never heard of — and explains the difference between water that looks fine and water that actually is. He covers how pH directly controls the effectiveness of your chlorine, and plants a flag on the concept that becomes Episode 2.

The episode closes with a look at what this show is going to be — who it’s for, what it covers, and why there’s nothing else quite like it.

What You’ll Take Away

You’ll understand why pool water is a chemical system with interacting variables — not a simple maintenance checklist — and why the difference between clear water and balanced water is the difference between a pool that costs you money and one that doesn’t.

Key Numbers from This Episode

HOCl = hypochlorous acid — the active, sanitizing form of free chlorine. pH is the primary lever that controls how much of it is available in your water.

Resources Mentioned

• Pools Scientific ebook series — Vol. 1 for pool owners, Vol. 2 for chemistry deep dive, Vol. 3 for pros and equipment: payhip.com/poolsscientific
• Show notes, tools & free resources: poolsscientific.com
• Weekly episode emails — subscribe free at poolsscientific.com
• Instagram: @poolsscientific24

Next Episode — April 28

Ep. 2: The 7.5% Rule — The Most Important Number You’ve Never Heard Of

Your test strip shows chlorine. The water looks clear. But is that chlorine actually working? Next Tuesday, John breaks down the relationship between cyanuric acid and free chlorine — and the single ratio that determines whether your sanitizer is doing its job.

About the Host

John Cooper holds an M.S. in Nuclear Engineering, a B.S. in Chemical Engineering, served as a U.S. Navy Nuclear Operator on submarines, and holds five PHTA certifications: CPO, CPI, CMS, CST, and CSP. He is the founder of Pools Scientific LLC and has managed pool chemistry across thousands of pools throughout his career.