Here’s where it gets funny. If you overdo the alkalinity—say, crank it above 150 ppm—you’ll hit a different wall. High alkalinity makes your pH stubbornly high, like a teenager refusing to leave their room. You’ll dump acid in, pH drops for a day, then bounces right back up. Annoying, right? That’s because alkalinity is a buffer: it resists change in both directions. The trick is balance, not extremes. Nobody wants to swim in water that feels like a chalky mineral bath either.
What Causes Low Alkalinity In Salt Water Pool at Skye Fishbourne blog
What happens if you ignore it? (Spoiler: it’s gross)
Low alkalinity leads to corrosion. I’m talking about etched concrete, rusty ladder bolts, and cloudy water that smells like a public gym. Your pool equipment—pump, heater, filter—will age faster than a Hollywood starlet under harsh lighting. And your swimmers? Hello, red eyes and dry hair. High alkalinity, on the other hand, causes scaling—that white, crusty ring around your tiles that looks like dirty bathtub ring but way harder to scrub off. Either way, you lose.
That Dave? He now tests alkalinity every week like a ritual. He even bought a fancy digital tester. “I used to think pH was the boss,” he said. “Now I know alkalinity is the boss of the pH.” Smart guy. His pool stayed crystal clear all August, and the kids renamed it “Dave’s Blue Lagoon.”
What Does Alkaline Do In A Pool at Maria Kring blog
