Pool Chemistry and Maintenance From a CPO
Nadia Caldwell · June 27, 2026
Dose 20 ppm of calcium hypochlorite shock at a CYA level of 50 ppm, and you’re managing chemistry. Install a gate that doesn’t self-latch, and you’re gambling with a child’s life. Over the past fifteen years, I’ve overseen water chemistry across resort complexes, private estates, and municipal facilities throughout the Southwest — but the single … Read more
Nadia Caldwell · June 26, 2026
Around this time each year, I field a familiar type of call from someone who installed an above-ground pool during the previous warm months. The message is usually some variation of “I was told this would be straightforward” and concludes with me walking them through a murky-brown water emergency, a liner that appears aged beyond … Read more
Nadia Caldwell · June 26, 2026
A 500-watt draw on a circuit that should only handle intermittent underwater loads—that’s what I see when I test the existing setup at pools I take over, and it never stops bothering me. The fixture sits submerged in your backyard, running on the same voltage as your kitchen counter, surrounded by children on summer evenings. … Read more
Nadia Caldwell · June 26, 2026
Tuesday morning, equipment room attached to a 15,000-gallon resort facility. The salt chlorinator’s display panel is flashing “Inspect Cell,” the water’s turning cloudy despite readings that show adequate salinity, and the operator standing next to me is convinced the entire generator has failed. Wrong diagnosis. The cell itself just needs a thorough cleaning. What I … Read more
Nadia Caldwell · June 25, 2026
Walk up to a three-year-old above-ground pool in a Scottsdale backyard, and the setup tells you everything. The water itself reads 7.4 pH and 2.0 ppm free chlorine — chemistry locked in tight. The filter’s humming along without complaint. But then you notice the entry: a metal ladder bolted to the pool wall, moving slightly … Read more
Nadia Caldwell · June 25, 2026
You’ll encounter two conflicting statements poolside and online with striking regularity. The first claims “Chemistry is everything—get your chlorine and pH dialed in, and clarity follows.” The second insists “A filter does the real work; chemistry is just support.” Here’s the truth neither camp fully grasps: one of these statements is incomplete, and chasing it … Read more
Nadia Caldwell · June 25, 2026
Sunrise routine across three different Scottsdale-area facilities I managed in rotation: step onto the deck, assess the debris situation, and immediately calculate the overnight temperature loss. At one sprawling HOA complex, I routinely collected an entire skimmer basket’s worth of oak debris, insect matter, and airborne seed pods before sunrise — without fail, day after … Read more
Nadia Caldwell · June 24, 2026
During my years overseeing water chemistry across resort pools, municipal facilities, and HOA complexes throughout the Southwest, one pattern emerged without fail: the instant a pool operator pulls out a test strip and squints at its color chart is precisely when the chemistry management process starts deteriorating. What I use on my pool: Catches chloramine … Read more
Nadia Caldwell · June 24, 2026
Most of the “solar covers don’t work” complaints I get aren’t actually about the cover. They’re about how it’s being used. I’ve walked onto properties where the cover was on bubble-side-up, left off all night, or balled up in the shallow end for two days after a storm — and then the owner tells me … Read more
Nadia Caldwell · June 24, 2026
Late April arrives, you pull the winter cover back, and what greets you resembles pond water thick enough to stand a brush in. The pool you winterized in November with flawless water balance has transformed into a brackish, opaque mess, and now you’re calculating whether to surrender $800 to a professional crew. What I use … Read more