Swimming pools require a lot of regular maintenance to keep them both attractive and safe for swimming. One of the many issues pool owners face is the buildup of hard water deposits on the pool walls. Lime and other minerals accumulate near the water line and can quickly stain the tiles, leading to an ugly "bathtub ring" appearance. Cleaning hard water stains off pool tile can be done fairly quickly, but it needs to be done regularly to keep your pool looking its best.
Things You'll Need
- Scrub brush or sponge
- Mineral-removing gel
- Towels or rags
- Scraping blade
Drain the pool enough to expose the scale that has accumulated at the water line. This is where the majority of the hard water staining will be located.
Scrub the stains with a rough sponge or a scrub brush. In some instances, this may be enough to remove the hard water buildup completely. However, if the stains have been there a while, you will likely need to treat them to fully remove them.
Treat the hard water stains with a mineral-removing gel. Lime is a common result of hard water buildup, so a lime remover works well for this. Gel works best since it will stick to the tile instead of running off into the pool water. Let the chemical agent sit on the deposits for 15 minutes, or the length of time recommended on the product label.
Scrub the stains again to fully remove them, wipe off the residue with dry towels or rags, and then rinse the pool tile with water from a hose.
Use a scraping blade to remove any stubborn remains. To avoid scratching the tile, don't use too much pressure when you scrape.
Add water to the pool to fill it back up to its normal depth.
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