--- product_id: 15987893 title: "1-Quart Concentrated Metal Out Stain and Mineral Inhibitor, Pool Metal Remover, Stain Remover, Made in USA" brand: "pool mate" price: "VT9958" currency: VUV in_stock: true reviews_count: 11 category: "Pool Mate" url: https://www.desertcart.vu/products/15987893-1-quart-concentrated-metal-out-stain-and-mineral-inhibitor-pool store_origin: VU region: Vanuatu --- # 1 qt treats 10,000 gal Monthly maintenance dosing Prevents metal stains & rust 1-Quart Concentrated Metal Out Stain and Mineral Inhibitor, Pool Metal Remover, Stain Remover, Made in USA **Brand:** pool mate **Price:** VT9958 **Availability:** ✅ In Stock ## Summary > 💧 Keep your pool flawless—because clear water is the new status symbol! ## Quick Answers - **What is this?** 1-Quart Concentrated Metal Out Stain and Mineral Inhibitor, Pool Metal Remover, Stain Remover, Made in USA by pool mate - **How much does it cost?** VT9958 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/15987893-1-quart-concentrated-metal-out-stain-and-mineral-inhibitor-pool) ## Best For - pool mate enthusiasts ## Why This Product - Trusted pool mate brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rust & Scale Shield:** Protects plumbing and pool surfaces from corrosion and unsightly stains all season long. - • **Season-Long Clarity:** Use at openings, closings, and monthly to maintain pristine pool water effortlessly. - • **Ultimate Metal Defense:** Blocks and removes iron, copper, manganese, and more to keep your water crystal clear. - • **Proven Premium Performance:** Trusted by well water users for fast, reliable stain removal without breaking the bank. - • **Precision Dosage, Maximum Impact:** One quart covers 10,000 gallons for efficient, cost-effective pool care. ## Overview Pool Mate 1-Quart Concentrated Metal Out is a powerful liquid formula designed to remove and prevent metal stains caused by iron, copper, manganese, and other minerals in pool water. Treating 10,000 gallons per quart, it protects pool plumbing and surfaces from rust and scale buildup. Ideal for use during pool openings, closings, and monthly maintenance, this USA-made product ensures crystal-clear, stain-free water all season long. ## Description This product helps prevent discoloration of pool water due to iron, calcium, manganese, copper and other metals and minerals which may be present in the water supply. This product is an excellent general purpose sequestrant which helps protect plumbing and pool walls from rust, stain and scale. It should be used for all pool openings and closings and throughout the season as needed. For initial filling of pool, if iron or other metallic contaminants are suspected, add one quart of Metal Free for each 10,000 gallons of pool water. Add Metal Free while the pool is being filled and before chlorine is added. To correct an existing colored water problem (due to the presence of minerals in the pool water), first close the pool to all swimmers. Leave the filter pump running. Stop chlorinating the pool and allow the chlorine level to drop to zero. Lower the pH of the pool water to 6.8 with pH Lower, lowering the pH will re-dissolve the metallic impurities. Add one quart of Metal Free per 10,000 gallons of water and allow the pool water to circulate overnight, or until the water is clear. Re-adjust the pH of the pool water between 7.2-7.8 with pH Rise. Begin normal chlorination and pool operation. Swimming may resume when chlorine residual is 1.0-3.0 ppm. To make up for loss of Metal Free due to backwashing and/or splash-out, add one quart of Metal Free for each 20,000 gallons of pool water, once each month. Review: Works Just as Well as the Expensive Stuff! - This product is a total game changer. I have well water with a high copper content, and every time I top off my pool, I used to worry about staining. I was using a much more expensive product from the pool company—until I found this. Pool Mate Metal Out works just as well for a fraction of the cost. It keeps my water clear and stain-free, and I’ve had zero issues with copper discoloration since switching. It’s easy to use, and a little goes a long way. If you’re looking to save money without sacrificing quality, this is absolutely the way to go. Highly recommend! Review: Works so much better than all the others - be certain to get Premium concentrated bottle - Due to high levels of Iron/Manganese/Sulfur in my well water, this year I decided to try this Premium metal out. Once the pool was filled with water I added the recommended amount, ran the filter, backwashed and repeated with same dosage and about 6 hours filter time. Then I tested levels again for hardness and PH. I added calcium per my own readings. This year when I added the shock I didn't get an entire pool of chocolate milk colored water - it was a pale brownish/green hue for which I added the rest of the bottle of Premium Metal remover and ran filter overnight, backwashed in the morning and checked levels and all was crystal clear. I could now place a chlorine floater in the pool and begin my weekly doses of E-Z Pools and call it all good for the season. This Premium metal out was far better that the regular one. It worked so much faster. If you have well water, I fully recommend this product!! ## Features - 1 quart per 10,000 gallons of water - Helps remove and prevent calcium, cobalt, copper, iron, lead, manganese, nickel and silver - This product helps prevent discoloration of pool water due to iron, calcium, manganese, copper and other metals and minerals which may be present in the water supply - This product is an excellent general purpose sequestrant which helps protect plumbing and pool walls from rust, stain and scale - It should be used for all pool openings and closings and throughout the season as needed ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00J3JMF9I | | Best Sellers Rank | #9,368 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #10 in Swimming Pool Stain Removers | | Brand Name | Pool Mate | | Customer Reviews | 4.4 4.4 out of 5 stars (1,449) | | Item Form | Liquid | | Item Type Name | Pool Stain Remover | | Item Weight | 32 Ounces | | Manufacturer | Robelle Industries | | Product Benefits | Prevents metal staining and discoloration, removes metals from water, protects pool plumbing rust scale | | UPC | 676215211564 | | Unit Count | 32.0 Fluid Ounces | ## Product Details - **Brand:** Pool Mate - **Item Form:** Liquid - **Item Weight:** 32 Ounces - **UPC:** 676215211564 ## Images ![1-Quart Concentrated Metal Out Stain and Mineral Inhibitor, Pool Metal Remover, Stain Remover, Made in USA - Image 1](https://m.media-amazon.com/images/I/61QqUQ7YdNL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: what are the ingredients?** A: According to the MSDS I have for it, it contains the same active ingredient that's used in many of the top brands, HEPD, which is the preferred metal sequestrant of many of the TroubleFreePool.com gurus. Chemical Name Wt.% CAS ----------------------------------------------------------------------------------------------------- 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid (HEDP) 30 - 50 2809-21-4 Phosphonic Acid < 0 - 2 13598-36-2 COMMENTS: Proprietary blend. Ingredients in this section have been determined to be hazardous as defined by 29CFR 1910.1200. **Q: Can you use Nature 2 cartridges after using this product to clear the water.** A: I don't see why not **Q: Will this product remove cobalt?** A: It is suppose to eliminate all metal. It works in my pool **Q: Will this remove the iron from the bottom of my pool? I do not have a pool filter** A: I do not know if it will do that. I use it when I fill my hot tub and it has a filter. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works Just as Well as the Expensive Stuff! *by L***E on July 26, 2025* This product is a total game changer. I have well water with a high copper content, and every time I top off my pool, I used to worry about staining. I was using a much more expensive product from the pool company—until I found this. Pool Mate Metal Out works just as well for a fraction of the cost. It keeps my water clear and stain-free, and I’ve had zero issues with copper discoloration since switching. It’s easy to use, and a little goes a long way. If you’re looking to save money without sacrificing quality, this is absolutely the way to go. Highly recommend! ### ⭐⭐⭐⭐⭐ Works so much better than all the others - be certain to get Premium concentrated bottle *by N***E on June 23, 2025* Due to high levels of Iron/Manganese/Sulfur in my well water, this year I decided to try this Premium metal out. Once the pool was filled with water I added the recommended amount, ran the filter, backwashed and repeated with same dosage and about 6 hours filter time. Then I tested levels again for hardness and PH. I added calcium per my own readings. This year when I added the shock I didn't get an entire pool of chocolate milk colored water - it was a pale brownish/green hue for which I added the rest of the bottle of Premium Metal remover and ran filter overnight, backwashed in the morning and checked levels and all was crystal clear. I could now place a chlorine floater in the pool and begin my weekly doses of E-Z Pools and call it all good for the season. This Premium metal out was far better that the regular one. It worked so much faster. If you have well water, I fully recommend this product!! ### ⭐⭐⭐⭐⭐ Good! *by A***R on May 20, 2022* Edit - It took about 24 hours before I saw noticeable results. I used 2 bottles and still didn’t completely remove so I used vitamin C from there. Did the trick. All is good now! I was hopeful after reading other reviews that this product would work. I have a 24’ round pool with heavy iron stains. I followed the instructions regarding ph and chlorine levels, and ended up using about a quart and a half of the product based on my pool size. The first photo is after putting the solution in and second two are 12 hours later. No change at all. Maybe the product is best for copper stains only but I searched all over the label and it says nothing in specific for the type of metal it treats. I discovered a Vitamin C tablet was able to remove the stain so I ordered a 2.5lb of vitamin c for $15 instead. Would not recommend this product. ## Frequently Bought Together - Pool Mate 1-Quart Concentrated Metal Out Stain and Mineral Inhibitor, Pool Metal Remover, Stain Remover, Made in USA - Clorox® Pool&Spa™ Swimming Pool Algaecide, Prevents and Treats Pool Algae, Non-Foaming, 1 Quart (Pack of 1) - Clorox® Pool&Spa™ Swimming Pool pH Up, Raises pH, Protects Against Eye and Skin Irritation, 4LB (Pack of 1) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/15987893-1-quart-concentrated-metal-out-stain-and-mineral-inhibitor-pool](https://www.desertcart.vu/products/15987893-1-quart-concentrated-metal-out-stain-and-mineral-inhibitor-pool) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-09*