This means:
“The post claims that a very quick and effortless method can remove green algae from a swimming pool, supposedly in only five minutes.”
Breakdown
“My Nana taught me this hack” = presents the method as an old-fashioned family secret or trusted household trick.
“Get rid of green pool algae” = remove the green algae that can grow when pool water chemistry or sanitation isn’t properly maintained.
“In 5 minutes” = promises an extremely fast result.
“With zero work” = exaggerates how effortless the process is.
“Here’s how it works” = promises to reveal the hidden method.
Important point
This is pool-maintenance clickbait. Green algae usually requires proper treatment of the pool’s sanitizer level, pH, filtration, circulation, and physical cleaning. A homemade shortcut that supposedly eliminates algae completely in five minutes is unlikely to be a reliable substitute for proper pool maintenance.
A simpler version:
“An easy way to tackle green pool algae—and the proper steps for getting your pool clear again.”
