--- product_id: 40673465 title: "Yellow Out Swimming Pool Chlorine Shock Enhancing Treatment - 2 lbs." brand: "coral seas" price: "216.38 DT" currency: TND in_stock: true reviews_count: 10 url: https://www.desertcart.tn/products/40673465-yellow-out-swimming-pool-chlorine-shock-enhancing-treatment-2-lbs store_origin: TN region: Tunisia --- # Boosts chlorine shock efficiency Gentle algae removal without harsh chemicals Works at high pH levels (7.8+) Yellow Out Swimming Pool Chlorine Shock Enhancing Treatment - 2 lbs. **Brand:** coral seas **Price:** 216.38 DT **Availability:** ✅ In Stock ## Summary > 🌊 Shock your pool into perfection—because your summer deserves crystal clarity! ## Quick Answers - **What is this?** Yellow Out Swimming Pool Chlorine Shock Enhancing Treatment - 2 lbs. by coral seas - **How much does it cost?** 216.38 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/40673465-yellow-out-swimming-pool-chlorine-shock-enhancing-treatment-2-lbs) ## Best For - coral seas enthusiasts ## Why This Product - Trusted coral seas brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **pH-Resilient Formula:** Performs optimally at higher pH levels, unlike traditional treatments. - • **Effortless Application:** No brushing needed—just add and watch algae vanish gently. - • **Chlorine Shock Amplifier:** Enhances your pool’s chlorine shock for faster, deeper algae elimination. - • **Non-Toxic & Eco-Friendly:** Protect your pool and the planet with a safe, non-toxic treatment. - • **Universal Pool Compatibility:** Safe for all pool surfaces including vinyl liners and plaster finishes. ## Overview Yellow Out Swimming Pool Chlorine Shock Enhancing Treatment is a 2 lb granular formula designed to boost the effectiveness of chlorine shock treatments by working efficiently at higher pH levels (7.8+). Compatible with all pool types including those with salt chlorine generators and plaster finishes, it safely and gently removes various algae types without harsh chemicals. Easy to use and non-toxic, it ensures a sparkling clean pool surface while maintaining environmental safety. ## Description Use 2 lbs of Yellow Out per 15,000 gallons of water prior to shock treatment with an EPA-registered chlorine that kills yellow algae. Yellow Out works great for all pools, including those with salt chlorine generators and plaster finishes. Both of these circumstances can create a higher pH in pool water (especially newer plaster), which happens to be the ideal condition in which Coral Seas products work. The recommended pH level is 7.8 or higher for ideal performance. This is opposite of traditional algae treatment methods which require a lower pH for chlorine to be more efficient. Yellow Out are also not affected by higher levels of cyanuric acid. ## Features - Compatible with pools operating a chlorine generator - Simple to use, requires no brushing, and cleans up algae gently without the use of harsh chemicals - Used in conjunction with pool shock to safely remove green, yellow, brown, and pink algae from your pool - Safe, non-toxic and can be used on all pool surfaces, including vinyl liners ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B002WKO6U6 | | Best Sellers Rank | #1,547 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #32 in Swimming Pool Chlorine | | Brand Name | Coral Seas | | Customer Reviews | 4.3 4.3 out of 5 stars (1,991) 4.3 out of 5 stars | | Item Form | Granular | | Item Type Name | Granular | | Item Weight | 2.2 pounds | | Manufacturer | Coral Seas | | Manufacturer Part Number | FBA_YO-2# | | Model Number | FBA_YO-2# | | Number Of Items | 1 | | Number Of Packs | 1 | | Product Benefits | algae | | Unit Count | 32 Ounce | | Upc | 040053230375 | ## Product Details - **Brand:** Coral Seas - **Item Form:** Granular - **Item Weight:** 2 Pounds - **Product Benefits:** algae - **UPC:** 040053230375 ## Images ![Yellow Out Swimming Pool Chlorine Shock Enhancing Treatment - 2 lbs. - Image 1](https://m.media-amazon.com/images/I/51+QhkO01YL.jpg) ![Yellow Out Swimming Pool Chlorine Shock Enhancing Treatment - 2 lbs. - Image 2](https://m.media-amazon.com/images/I/51PiDRkOe3L.jpg) ![Yellow Out Swimming Pool Chlorine Shock Enhancing Treatment - 2 lbs. - Image 3](https://m.media-amazon.com/images/I/21VapRBRWPL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Yellow be gone *by on Reviewed in the United States July 15, 2026* I’ve tried other brands, and this is by far the best product for getting rid of mustard algae. Read the directions and follow every step—it works every time. Don’t take any shortcuts, and make sure you use chlorine, either liquid chlorine or shock. I’ve had success with both. Within 24 hours, my pool water is sparkling clean and blue again! ### ⭐⭐⭐⭐⭐ It works, follow the directions to a T. *by on Reviewed in the United States July 16, 2026* (First photo is after and second is before) IT WORKS! Nothing else worked but this, you MUST follow directions as it does work. There’s a perfect amount in there to have some left over so it’s worth it for the cost if your pool is not huge. It dissolved into the water and mixed in perfectly. I bought this for my sisters 18’ x 52” pool, we used 1/3rd of the bottle, one pack of powdered chlorine and half a bottle of liquid shock, and after 12 hours we put in more liquid shock with another bag of powdered chlorine. ### ⭐⭐⭐⭐⭐ Finding this online *by on Reviewed in the United States July 19, 2026* I am happy to see that I can order this online.I can no longer find it in stores.It works very well in my pool.It gets all that little algae up and out of the pool ## Frequently Bought Together - Yellow Out Swimming Pool Chlorine Shock Enhancing Treatment - 2 lbs. - HTH 52037R Pool Care Shock Advanced, Swimming Pool Chemical - Cal Hypo Formula, Prevents Bacteria & Algae, Restores Crystal Clear Water - Shock Treatment, 1lb (12 Pack) - PoolRX+ pool unit 7.5k-20k gallons --- ## 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.tn/products/40673465-yellow-out-swimming-pool-chlorine-shock-enhancing-treatment-2-lbs](https://www.desertcart.tn/products/40673465-yellow-out-swimming-pool-chlorine-shock-enhancing-treatment-2-lbs) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-21*