Pool Chemistry and Maintenance From a Backyard Pool Owner
Nadia Caldwell Nadia Caldwell · July 13, 2026
The phone rings in July, and it’s always the same story: “My above-ground pool turned green overnight, and I swear I’m doing everything the manual says.” I ask a few questions about their routine, and the culprit emerges almost immediately — they’ve lifted their maintenance strategy straight from in-ground pool playbooks. That approach fails spectacularly … Read more
Nadia Caldwell · July 13, 2026
What’s actually stopping your pool from clearing up when algae blooms hit? Odds are strong it’s not your chlorine dose — it’s the brush you’re holding. Picture this instead: it’s dawn on a Tuesday at a big 75,000-gallon pool outside Phoenix, and the shallow end’s concrete steps have developed a yellowish-green film thick enough to … Read more
Nadia Caldwell · July 12, 2026
Safety devices manufactured by pool companies don’t come with the context you actually need. Neither does the store clerk restocking inventory. What nobody tells you upfront is that a removable mesh fence is only as effective as the habits of the people around it — and that one moment of negligence, one unlatched gate, can … Read more
Nadia Caldwell · July 12, 2026
Your pool’s eye-stinging reputation may have nothing to do with excess chlorine—and everything to do with chemistry you’re not actually measuring. Back in the middle of a Scottsdale summer, I helped a neighbour with a pool that had been causing irritation for days. The numbers they had were 3.0 ppm total chlorine, which looked like … Read more
Nadia Caldwell · July 11, 2026
A neighbour called me in a full panic last summer. Her 25,000-gallon pool had turned into something resembling swamp water between sunset and sunrise, and the family was expecting people over at noon. I asked three straightforward diagnostic questions, pinpointed the issue in under 120 seconds, and walked her through a complete fix that same … Read more
Nadia Caldwell · July 11, 2026
Stand at the equipment pad on a Tuesday in mid-summer, chlorine test kit in hand, and you’ll spot the pattern immediately: the free chlorine reading has tanked again, despite dosing just yesterday. So you add another dose. You recheck the stabilizer levels. A faint green shadow appears near the steps, triggering a full shock treatment … Read more
Nadia Caldwell · July 10, 2026
Dawn breaks at 7 a.m., and your pool’s surface has become a landing pad for an entire oak tree worth of branches and leaves. You reach for that threadbare skimmer net—the one that came vacuum-sealed to your telescoping pole back when you first set up—and you start dragging it across the water. It collects maybe … Read more
Nadia Caldwell · July 10, 2026
Suppose you’re dosing shock at 20 ppm and your CYA reads 110 ppm. That’s the moment people start screaming “chlorine lock” online. They’ve dumped chemicals, nothing visibly improves, and panic sets in. The chlorine won’t budge on the test kit. They’ve absorbed the cyanuric acid chlorine lock myth wholesale, treated it as settled fact, and … Read more
Nadia Caldwell · July 9, 2026
“Solar covers don’t actually work,” a pool store manager told a customer in front of me last year. “You need a real heater.” I asked him if he’d ever tracked water temperature on a covered versus uncovered pool during the same week. He hadn’t. That’s the problem with advice born from guesswork instead of data. … Read more
Nadia Caldwell · July 9, 2026
A pH reading of 7.8 right before you shut down for winter isn’t a problem—it’s a warning. That number tells you the water’s alkalinity buffering is working, but the moment freezing temps hit and you stop circulating, you’re about to trap chemistry inside a dormant system where it can’t respond. This is the post about … Read more