--- product_id: 3032655 title: "Extra Strength Stain Free, 1.75 lb, Single Pack" brand: "natural chemistry" price: "49115CFA" currency: XOF in_stock: true reviews_count: 9 category: "Natural Chemistry" url: https://www.desertcart.sn/products/3032655-extra-strength-stain-free-1-75-lb-single-pack store_origin: SN region: Senegal --- # Industrial strength ascorbic acid 100% natural & phosphate-free Compatible with all sanitizing systems Extra Strength Stain Free, 1.75 lb, Single Pack **Brand:** natural chemistry **Price:** 49115CFA **Availability:** ✅ In Stock ## Summary > ✨ Transform your pool from stained to stunning—naturally! 🌿 ## Quick Answers - **What is this?** Extra Strength Stain Free, 1.75 lb, Single Pack by natural chemistry - **How much does it cost?** 49115CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/3032655-extra-strength-stain-free-1-75-lb-single-pack) ## Best For - natural chemistry enthusiasts ## Why This Product - Trusted natural chemistry brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Friendly Formula:** All-natural, phosphate-free, and non-toxic for guilt-free pool care. - • **Proven Rapid Results:** See visible stain removal within minutes, transforming your pool overnight. - • **Universal Compatibility:** Works seamlessly with every pool sanitizing system—no compromises. - • **Complete Stain Defense Duo:** Pairs perfectly with Metal Free for ongoing, effortless stain prevention. - • **Powerful Metal Stain Eliminator:** Harnesses industrial strength ascorbic acid to erase stubborn metal stains fast. ## Overview Natural Chemistry Extra Strength Stain Free is a 1.75 lb all-natural pool stain remover featuring industrial strength ascorbic acid. It quickly and effectively removes metal stains from all pool surfaces without adding phosphates, is compatible with all sanitizing systems, and is non-toxic and environmentally friendly. Trusted by thousands, it delivers rapid, visible results and pairs with Metal Free for ongoing stain prevention. ## Description This Natural Chemistry extra strength stain free is an all natural stain remover that contains a blend of industrial strength ascorbic acid. It quickly removes metal staining without adding phosphates to your water. Tough on old set-in stains. Compatible with all sanitizing systems. Non-toxic, environmentally friendly and phosphate free. Recommended dose is 1-pound per 10,000-gallons of water. It can applied by following way that balance pool water and lower chlorine level to at least 1 ppm. Then add stain free as per dosage around the perimeter of the pool with the pump running. Brush pool thoroughly. After brushing, if stains are not completely removed add more strain free extra strength. Add a pulp based filter aid to your cartridge or sand filter. If you have a DE filter, make sure it is properly charged. Add metal free at a rate of 33.9-ounce per 20,000-gallons of water. Vacuum pool slowly and thoroughly. Use metal free as a weekly maintenance product to guarantee a stain free pool. Includes 12 stain free container per pack. Comes in 1-3/4-pounds container. Review: Transformed my pool - Following a refill after a repair, my white 11k gallon fiberglass pool turned solid brown in color. It was terrible, and after trying a bunch of different products I finally bought Natural Chemistry 07395 Extra Strength Stain Free. I simply added it to the pool, ran the pump for 15 minutes to 'stir' and then left it over night. The change the next morning was beyond remarkable - The pool is sparkling white. Your mileage may vary, but I am so pleased that I tried the product as I had almost given up. You will need to bring your chlorine back up slowly over the next couple of days as the treatment will flatten it. Also remember to clean your filter before the process and regularly for the next week. Some additional thoughts - - This works on metal stains, and you can test for that by buying some Vit C tablets from your drug store (white, crushable). It the stain fades when you rub a tablet on the pool wall then this product should work. - It will begin working immediately - My steps and floor near the pool walls cleared in 5 minutes - but it takes time for it to work across the entire pool. I ran the pump to mix the treatment in, but that was not something they stated in the instructions. - My pool was heavily stained so I used the entire treatment. - The 'after' pictures are the next day, about 24 hours after I added Stain Free. - Although there is nothing in the product instructions I have read that rapidly raising the pools chlorine and alkalinity can drop the metal back out of solution. I have raised it more gradually without issue over a few days. - $30+ for what is basically 2lb of powdered absorbic acid (Vit C) is expensive - You can buy an 8lb tub on desertcart for less than $60. If you don't think you will need to do this regularly then it is probably still worth it (I would have paid double, and I was quoted $300 by a pool company for basically the same thing). If you are in a high iron area and need to refill often then you can do better volumewise with your $. Review: Works on calcium silicate stain. - In a word: Amazing. I had severe calcium silicate deposits on the entire deep section of my Vinyl pool. This was a relatively new liner and I was considering replacing it. I tried many products and brushed it rigorously for weeks. This product dissolved it within minutes of application. It removed 100% of the hideous stain and it literally looks like it did when installed. I was in complete shock. After trying Scaletec, muriatic acid, lowering PH, and nothing even scratched the stain. This product eliminated it within minutes. Again, Amazing. Looks like new now. Picture is from before and shows the issue I had. ## Features - All Natural Stain Eliminator: Natural Chemistry Stain Free Extra Strength is ideal for treating metal staining on all pool surfaces. This natural stain remover contains a blend of industrial strength ascorbic acid to quickly remove metal staining without adding phosphates to your water. - Tough on Old Set-in Stains: The industrial strength ascorbic acid makes this stronger for use on more stubborn stains caused by metals. - Compatibility: Extrs Strength Stain Free is compatible with all sanitizing systems. - Stain Fighting: Use with Natural Chemistry Metal Free for the ultimate 1-2 combination for stain fighting. - Tested and Proven Effective: Natural Chemistry products are known for delivering reliable results and making water care less complex. Natural Chemistry carries an extensive line of pool and spa solutions that match your unique needs. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00C5L7NWU | | Best Sellers Rank | #7,888 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #11 in Swimming Pool Stain Removers | | Brand | Natural Chemistry | | Brand Name | Natural Chemistry | | Customer Reviews | 4.5 out of 5 stars 1,460 Reviews | | Global Trade Identification Number | 00717108073958 | | Item Form | Liquid | | Item Highlight | Removes Metal Stains from Pool Liners & Finishes, Compatible with All Sanitizing Systems | | Item Weight | 16 ounces | | Manufacturer | Natural Chemistry | | Manufacturer Part Number | 07395 | | Model Number | 07395 | | Number of Items | 1 | | Package Size Name | 1.75 lb | | Product Benefits | Prevents Stains | | UPC | 717108073958 | | Unit Count | 1 Count | ## Product Details - **Brand:** Natural Chemistry - **Item Form:** Liquid - **Item Weight:** 16 ounces - **Product Benefits:** Whitening - **UPC:** 717108073958 ## Images ![Extra Strength Stain Free, 1.75 lb, Single Pack - Image 1](https://m.media-amazon.com/images/I/41WPCm7WarL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Transformed my pool *by G***J on February 24, 2022* Following a refill after a repair, my white 11k gallon fiberglass pool turned solid brown in color. It was terrible, and after trying a bunch of different products I finally bought Natural Chemistry 07395 Extra Strength Stain Free. I simply added it to the pool, ran the pump for 15 minutes to 'stir' and then left it over night. The change the next morning was beyond remarkable - The pool is sparkling white. Your mileage may vary, but I am so pleased that I tried the product as I had almost given up. You will need to bring your chlorine back up slowly over the next couple of days as the treatment will flatten it. Also remember to clean your filter before the process and regularly for the next week. Some additional thoughts - - This works on metal stains, and you can test for that by buying some Vit C tablets from your drug store (white, crushable). It the stain fades when you rub a tablet on the pool wall then this product should work. - It will begin working immediately - My steps and floor near the pool walls cleared in 5 minutes - but it takes time for it to work across the entire pool. I ran the pump to mix the treatment in, but that was not something they stated in the instructions. - My pool was heavily stained so I used the entire treatment. - The 'after' pictures are the next day, about 24 hours after I added Stain Free. - Although there is nothing in the product instructions I have read that rapidly raising the pools chlorine and alkalinity can drop the metal back out of solution. I have raised it more gradually without issue over a few days. - $30+ for what is basically 2lb of powdered absorbic acid (Vit C) is expensive - You can buy an 8lb tub on Amazon for less than $60. If you don't think you will need to do this regularly then it is probably still worth it (I would have paid double, and I was quoted $300 by a pool company for basically the same thing). If you are in a high iron area and need to refill often then you can do better volumewise with your $. ### ⭐⭐⭐⭐⭐ Works on calcium silicate stain. *by A***R on April 20, 2026* In a word: Amazing. I had severe calcium silicate deposits on the entire deep section of my Vinyl pool. This was a relatively new liner and I was considering replacing it. I tried many products and brushed it rigorously for weeks. This product dissolved it within minutes of application. It removed 100% of the hideous stain and it literally looks like it did when installed. I was in complete shock. After trying Scaletec, muriatic acid, lowering PH, and nothing even scratched the stain. This product eliminated it within minutes. Again, Amazing. Looks like new now. Picture is from before and shows the issue I had. ### ⭐⭐⭐⭐⭐ This stuff works!! *by A***! on July 6, 2026* WOW WOW WOW My pool was very rusty and brown when we opened it this year. The liner is several years old, but I thought I would try this and it worked!! My pool looks clean again. Very satisfied! I followed the directions on the bottle. ## Frequently Bought Together - Natural Chemistry 07395 Extra Strength Stain Free, 1-3/4-Pound - Natural Chemistry 07001 Metal Free 1 Liter - CuLator Metal Eliminator & Stain Preventer for Pools & Spas PowerPak 1.0 --- ## 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.sn/products/3032655-extra-strength-stain-free-1-75-lb-single-pack](https://www.desertcart.sn/products/3032655-extra-strength-stain-free-1-75-lb-single-pack) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-09-21*