You add acid. pH comes back up. You add more. Eventually you grab the whole jug. Then you pull up the next morning and the liner is wrinkled — across the walls and floor in that specific way that only happens one way.

This episode explains why that happens. Not with a product recommendation. Not with a different test kit. With the physics that's been governing dissolved gases in liquids since William Henry described it in 1803.

Once you understand the pH ceiling, you stop chasing. You start managing. And those are completely different things.

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.

"My pool guy is full of crap."

It shows up in forums, in Facebook groups, in Reddit threads. And sometimes? They're not wrong.

But most of the time the pool guy isn't the problem. The problem is what he was handed before he ever showed up at your pool.

This episode is his defense.

Five things your pool guy is most likely getting wrong right now — not because he's cutting corners, but because nobody in the chain ever gave him the reasoning. The science behind each one. What it costs when you get it wrong. And what the conversation looks like when both sides of this relationship actually understand the chemistry.

For pool owners who want to understand what professional pool care really looks like. For pool professionals who've never heard someone make the case for them properly.

New episodes every Tuesday. Show notes and full resources at poolsscientific.com. Find us on Spotify and Apple Podcasts.

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.

Salt chlorine generators are, in my professional opinion, the best residential pool chlorination method available today. I recommend them. My company installs them. And they fail constantly. Not because the technology is flawed. Because the information gap between what owners are told at installation and what the chemistry actually requires is enormous. Today we go inside the cell. The electrolysis reaction, why your pH rises every single time it runs, why cell scaling happens and how to stop it, and the three most common mistakes that turn a great system into a frustrating one. Plus UV, ozone, and the setup I actually recommend when someone asks me what the best possible pool looks like.

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.

There is one calculation that determines whether your pool water is slowly destroying your equipment, etching your plaster, or quietly depositing scale on every surface it touches. Most pool owners have never heard of it. Most pool guys never mention it. It runs in the background of every service visit I do, every single week. Today we talk about the Langelier Saturation Index. What it is, what it measures, and why getting it wrong is the most expensive mistake in pool ownership that nobody sees coming.

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.

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.

John got a call from another pool guy who was in way over his head. What he found when he walked into that equipment room is the single best argument for why pool care needs to be treated as a science — not a trade skill passed down by feel and guesswork. This is the episode that explains why Pools Scientific exists, what’s fundamentally broken about the way pool care is practiced, and what it actually costs when the science gets ignored. Listen before you touch your pool chemistry again. PoolsScientific.com

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.