My Nana Taught Me This Hack to Get Rid of Green Pool Algae in 5 Minutes With Zero Work—Here’s How It Works

contacts the algae, it breaks down their cell structures almost instantly. This rapid chemical reaction means the algae die off within minutes.

Because hydrogen peroxide naturally breaks down into water and oxygen, it leaves no harmful residues behind. Once the algae is gone, you can swim again almost immediately—no waiting for chemical levels to normalize.

5. The Science Behind It

Hydrogen peroxide (H₂O₂) is composed of hydrogen and oxygen. When added to water, it decomposes into water (H₂O) and oxygen (O₂), releasing reactive oxygen species that effectively destroy organic matter,