10 Best Swimming Pool Stain Removers 2025 in the United States

The AquaDoc Pool & Hot Tub Stain and Scale Remover is a liquid formula designed to tackle a variety of common pool stains caused by metals like calcium, iron, copper, and manganese. It works well on multiple surface types, including vinyl, plaster, fiberglass, pebble, quartz, and painted finishes, making it a versatile choice whether you have a gunite or traditional pool. This remover not only targets visible rust and discoloration but also helps control scale buildup, supporting clearer water and healthier pool equipment.

One of the product’s strengths is its ease of use: it’s an easy-to-pour liquid that can be integrated into your regular pool maintenance routine without needing expert knowledge. This makes it especially appealing for pool owners who want effective stain control without complicated steps.

The one-gallon size is practical for multiple treatments or larger pools. Because it is a chemical treatment, users should handle it carefully and follow instructions to avoid damaging pool surfaces or surrounding areas. AquaDoc provides a dependable and user-friendly solution for managing metal stains and scale, particularly suited for pool owners looking for a straightforward product compatible with a wide range of pool surfaces.

The EasyCare 20064 Scaletec Plus Descaler and Stain Remover is designed to tackle a range of pool maintenance issues, including removing calcium buildup and iron stains. This product stands out because it does not require scrubbing, acids, or draining the pool, making it user-friendly and efficient. It is a pourable liquid, which simplifies application and ensures even distribution across surfaces and equipment. This product is compatible with various pool surfaces and helps control all metals to prevent future staining.

Additionally, it is non-acidic, low in phosphates, and environmentally safe, reducing harmful chemical exposure and making it a greener choice for pool maintenance. The 64-ounce bottle should provide enough product for multiple treatments, with users reporting visible results in as little as 2 to 4 weeks. However, its performance during winter as a preventative measure is another notable advantage, ensuring pool surfaces stay clean during off-season months.

On the downside, some users may find that it takes multiple applications to achieve the desired results, particularly for severe stains. Though generally well-reviewed, a few customers have mentioned that the product's efficiency can vary depending on the pool's water chemistry and level of buildup. The EasyCare 20064 Scaletec Plus is a solid choice for those seeking a convenient and environmentally friendly pool stain remover.

The Pool Mate Concentrated Metal Out Stain and Mineral Inhibitor is a liquid product designed to remove and prevent various metal stains in swimming pools, including calcium, copper, iron, manganese, and more. It is especially useful for pools that experience discoloration caused by metals in the water supply. With a dosage of 1 quart per 10,000 gallons, it is fairly concentrated and intended for ongoing use throughout the swimming season as well as during pool openings and closings.

This product works as a sequestrant, meaning it binds metals to prevent staining and scale buildup on pool surfaces and plumbing. Its liquid form makes it straightforward to apply, and it is compatible with most pool surfaces since it focuses on treating the water rather than harshly scrubbing the pool walls. Users have given it positive feedback, with a solid 4.4-star rating from over a thousand reviews, which suggests it performs well in real-world conditions.

It primarily targets metal stains, so it might not be effective against organic or algae-related stains. Since it is a chemical treatment, proper handling and dosing are important to avoid any pool chemistry imbalance. Pool Mate is a practical and well-reviewed solution for pool owners dealing with metal stains and those looking to prevent future staining and buildup. It is user-friendly for regular maintenance but may not address all stain types or environmental preferences.