Purity Pool Out Spot Self-Contained Underwater Stain Remover

The Purity Pool Out Spot is a self-contained underwater spot remover that lets you tackle stubborn stains and fresh rust spots without draining your pool or scrubbing the surface. Using the simple principle that acid is heavier than water, the tool slowly dispenses a small, controlled amount of acid through a soaker pad that isolates it from the pool water, working for up to 20 minutes per cup of acid. It's gentle on plaster, vinyl, fiberglass, and concrete surfaces, and safer than abrasive pumice stones that can gouge or scratch pool finishes. Trusted since 1961, Purity Pool builds professional-grade timesaving tools for pool service pros and discerning homeowners alike.

• Chemical action removes most stains and fresh rust spots in seconds
• Replaces harsh pumice stones that gouge and scratch pool surfaces
• Soaker pad isolates acid from pool water for targeted, controlled treatment
• Safe for plaster, vinyl, fiberglass, and concrete pool surfaces
• No setup, mixing, or draining required — reusable pad lasts for years