4 Things to Know About Removing Pool Scale

Use muriatic acid for stubborn, thick scale Dilute it 1:10 with water, wet the tile, apply with a sponge or sprayer, let it sit for a minute, scrub with a nylon brush, and rinse well. Do not let it dry on the surface or it will etch.

Use a wet pumice stone for light, powdery scale Rub the real volcanic stone gently over the tile to lift scale without chemicals. Test in an inconspicuous spot first, as pumice can scratch softer tile like travertine or glazed ceramic.

For very thick scale, consider an acid soak or specialty remover Products like Magic Lube or Scale Free work, but muriatic acid is cheaper and fast if you handle dilution and PPE carefully.

Never use acid on pool plaster or fiberglass surfaces It will damage the finish. Use a phosphate-based cleaner or a mild vinegar soak instead. Always wear gloves and goggles.