3 Steps to Remove Calcium Scale From Pool Tile

Start with a pumice stone Wet the stone and tile, then gently rub. It abrades light to moderate scale without scratching glazed ceramic or glass tiles.

Switch to diluted muriatic acid for thick buildup Mix 10 parts water to 1 part acid. Pour it on, let it fizz for 30 seconds, scrub with a nylon brush, and rinse. Test on an inconspicuous spot first — natural stone or salt-finished tiles can etch.

Avoid wire brushes, razor blades, and harsh pads These leave permanent scratches. Never mix acid with chlorine or other pool chemicals — that creates toxic gas.