{"product_id":"coral-seas-yellow-out-pool-shock-2x4lb-algae-control-quick-chlorine-boost","title":"Coral Seas Yellow Out Pool Shock 2x4lb – Algae Control \u0026 Quick Chlorine Boost","description":"\u003csection\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eCoral Seas Yellow Out is a high-performance pool shock treatment designed to tackle algae and support balanced water chemistry without leaving stains or harsh residues on your pool surface. Delivered as two 4-pound pouches, it gives you a flexible option for regular maintenance or after a green episode.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it does\u003c\/h3\u003e\n\u003cp\u003eEngineered to target a range of algae colors green, brown, pink, and mustard, Yellow Out helps restore clarity by delivering a strong oxidizing dose when activated with an oxidizer. It dissolves instantly with no brushing required, so you can quickly reestablish inviting water even after a busy weekend.\u003c\/p\u003e\n\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMulti-purpose dose raises free chlorine, supports water hardness, and nudges pH toward balanced levels.\u003c\/li\u003e\n\u003cli\u003eFast-acting chlorine boost helps you recover clearer water faster.\u003c\/li\u003e\n\u003cli\u003eDissolves in seconds with no scrubbing required.\u003c\/li\u003e\n\u003cli\u003eSafe for plaster, fiberglass, vinyl, and salt systems.\u003c\/li\u003e\n\u003cli\u003eTargets multiple algae strains for broader control in one treatment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNever premix Yellow Out with chlorine or other chemicals.\u003c\/li\u003e\n\u003cli\u003eDissolve the powder in a bucket of water before adding it to the pool.\u003c\/li\u003e\n\u003cli\u003eUse 2 lb per 15,000 gallons for a standard treatment, or 1 lb per 10,000 gallons for smaller pools.\u003c\/li\u003e\n\u003cli\u003eAfter adding Yellow Out, wait 5 minutes, then add your oxidizer (chlorine, bleach, or non-chlorine shock) to activate the treatment.\u003c\/li\u003e\n\u003cli\u003eRun your circulation system after application and avoid swimming for 8-10 hours if practical.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTiming and safety tips\u003c\/h3\u003e\n\u003cp\u003eFor best results, apply at night when the sanitizer can work steadily under cooler conditions. Always follow the label directions and use the correct dosage for your pool size to maintain balanced water.\u003c\/p\u003e\n\n\u003ch3\u003eWho benefits\u003c\/h3\u003e\n\u003cp\u003eIdeal for residential pools with plaster, fiberglass, vinyl, or salt systems. Also suitable after heavy rainfall or heat waves when water can look dull, making it a convenient option for regular maintenance.\u003c\/p\u003e\n\n\u003ch3\u003eMaintenance and results\u003c\/h3\u003e\n\u003cp\u003eUsed as part of a balanced program with an oxidizer, Yellow Out supports clear water and consistent sanitizer levels. It complements other pool care steps and helps you maintain a welcoming pool surface between cleanings.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What algae can Yellow Out help control?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yellow Out targets green, brown, pink, and mustard algae, helping improve water clarity when used with an oxidizer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How should I apply Yellow Out for best results?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Add Yellow Out to the pool, wait 5 minutes, then add chlorine or non-chlorine shock; 2 lb treats 15,000 gallons; never premix with other chemicals.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Coral Seas","offers":[{"title":"Default Title","offer_id":48214658908404,"sku":"B002WKM1P8","price":76.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/6652\/0820\/files\/coral-seas-yellow-out-pool-shock-2x4lb.jpg?v=1778520759","url":"https:\/\/www.cerapatiogarden.com\/products\/coral-seas-yellow-out-pool-shock-2x4lb-algae-control-quick-chlorine-boost","provider":"Cera Garden","version":"1.0","type":"link"}