Your first and easiest ally is the sun. Ultraviolet (UV) rays naturally break down chlorine molecules, a process photochemists call photolysis, but you can just think of it as solar sass. On a bright day, uncovered pools can lose up to 90% of their free chlorine in just a few hours. So, if your levels spiked after a shock treatment, simply remove the pool cover and let the sun do the heavy lifting. It’s like putting your pool on a sunbathing diet—no effort, just rays.
Of course, if the weather forecast looks like a vampire’s dream—grey and overcast—you might need a backup plan. That’s where the next trick comes in, and it’s delightfully low-tech.
