Elevated Pool Care Through Science.
Every Tuesday. Hosted by John Cooper — M.S. Nuclear Engineering, B.S. Chemical Engineering, U.S. Navy Nuclear Operator and submarine veteran, and five-time PHTA certified professional. The only science-based pool podcast.
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.
What You’ll Learn
Ready to go deeper? Volume 1 of the Pools Scientific ebook series covers the fundamentals introduced in this episode — the chemistry your pool store never taught you.
View EbooksYour pool tests fine for chlorine. The strip says you’re good. So why does it feel like the water isn’t quite right — or worse, why is it growing algae when the numbers look acceptable? The answer is something most pool owners have never heard of, and once you understand it, you’ll never look at a chlorine test the same way again. This episode covers the most important number in outdoor pool chemistry — and why ignoring it means your sanitizer may not be doing what you think it is.
What You’ll Learn
The 7.5% Rule reference table — every CYA level and its minimum FC requirement — is in Volume 2 of the Pools Scientific ebook series.
View EbooksJohn gets calls constantly from pool owners with expensive damage — etched plaster, failed heaters, crumbling grout — on pools that looked perfectly fine. Crystal clear water. Chemistry that tested “in range.” No algae, no cloudiness, no warning signs whatsoever. And every single time, the cause is the same thing. This episode introduces the one number that tells you whether your water is quietly destroying your pool right now — and how five variables you can test and adjust are either working for you or against you.
What You’ll Learn
Volume 2 of the Pools Scientific ebook series covers the full LSI formula, worked examples, and the complete water balance framework in mathematical depth.
View EbooksThe biggest lie in the residential pool industry is printed on manufacturer brochures, repeated by pool store salespeople, and believed by millions of pool owners making purchasing decisions right now. John has seen the damage it causes firsthand — across nearly 300 active pools and thousands throughout a career. This episode dismantles that myth completely, explains what’s actually happening inside a salt chlorine generator at the chemistry level, and gives you the real maintenance framework that protects your investment. If you own a salt pool, this episode may be the most useful 33 minutes you spend this season.
What You’ll Learn
Volume 2 of the Pools Scientific ebook series covers salt pool chemistry, water balance targets, and the complete SWG management framework in depth.
View Ebooks“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 Five Things
Ready to understand your pool chemistry? The Pools Scientific ebook series gives every pool owner the science foundation this episode is built on.
View EbooksYou add pH reducer. It comes down. A few days later it’s high again. You add more. It comes back. Every season. The same cycle. Most pool owners assume this is just how pools work. It isn’t. pH rises for specific chemical reasons — and understanding those reasons changes everything about how you manage it. This episode covers the two primary mechanisms behind pH rise, why salt pools are especially vulnerable, and the practical management approach that actually works.
What You’ll Learn
Volume 2 of the Pools Scientific ebook series covers pH, alkalinity, and the full water balance framework in complete mathematical depth.
View EbooksPool advice on social media travels faster than ever. A confident presenter, a clear pool, and a before-and-after format is all it takes to reach a million people — regardless of whether the chemistry holds up. Some of it is accurate. A significant amount is not. And the consequences of following bad chemistry advice show up in your water, on your surfaces, and eventually in your wallet. This episode gives you a framework for evaluating what you see before you try it in your pool.
What You’ll Learn
Something is coming. John has been building a chemistry subscription for pool owners who want a real answer for their specific pool — not a general answer for everyone. More on Episode 8.
52 episodes planned for Year 1 — April 2026 through March 2027. Subscribe to the email list to get notified every time a new episode drops.