{"product_id":"bioguard-back-up-2-qt-2-pack-algae-prevention-for-pools-non-staining-clear-water","title":"BioGuard Back Up 2-Qt, 2-Pack | Algae Prevention for Pools – Non-Staining \u0026 Clear Water","description":"\u003ch2\u003eProtect Your Pool with BioGuard Back Up 2-Qt, 2-Pack\u003c\/h2\u003e\n\u003cp\u003eBioGuard Back Up 2-Qt in a convenient two-pack brings a proven algae preventative to both chlorine and bromine pools. Its formula blends a potent algicide with a wetting agent, helping it reach tiny cracks and spaces where algae often begin.\u003c\/p\u003e\n\u003cp\u003eDesigned to work across pool surfaces without altering your pool chemistry, Back Up 2-Qt stays non-staining and pH-friendly. The 40% quaternary ammonium algicide targets algae growth, while the formulation is tuned to a mild pH around 5.7 in use. Warmer water typically heightens activity, so this guard can feel more active as temperatures rise.\u003c\/p\u003e\n\u003ch3\u003eWhat makes BioGuard Back Up 2-Qt a strong companion for pool care\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with both chlorine and bromine systems, offering flexible protection.\u003c\/li\u003e\n\u003cli\u003ePowerful surfactant\/wetting agent enables penetration into tiny cracks and crevices.\u003c\/li\u003e\n\u003cli\u003eHigh-clarity support—helps keep water looking clear by reducing visible algae.\u003c\/li\u003e\n\u003cli\u003eNon-staining formula, safe for all pool surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey benefits you may notice\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaintains a consistent water look as outdoor temps rise, when algae growth can accelerate.\u003c\/li\u003e\n\u003cli\u003eWorks as both preventative and ongoing control with weekly or interval dosing.\u003c\/li\u003e\n\u003cli\u003eStays compatible with standard pH and chlorine targets when used as directed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use BioGuard Back Up 2-Qt (2-Pack)\u003c\/h3\u003e\n\u003cp\u003eFollow these steps to apply the product effectively while keeping your water balanced:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInitial treatment: add 32 fl oz per 25,000 gallons of water (about 4 ppm).\u003c\/li\u003e\n\u003cli\u003eWeekly maintenance: add 1 fl oz per 5,000 gallons (about 0.5 ppm).\u003c\/li\u003e\n\u003cli\u003eBi-weekly interval: add 2 fl oz per 5,000 gallons (about 1 ppm) every other week.\u003c\/li\u003e\n\u003cli\u003eVacation protection: if leaving for a week or more, add 4 fl oz per 5,000 gallons per week unattended.\u003c\/li\u003e\n\u003cli\u003eEdge dosing tip: pour around the shallow end edges if shock is used in the deep end.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePractical notes\u003c\/h3\u003e\n\u003cp\u003eFor best results, adjust pH to 7.2–7.6 and maintain chlorine residual at 1–4 ppm before dosing. This product is designed to work with a wide range of pool surfaces without staining or pH disruption.\u003c\/p\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 makes BioGuard Back Up 2-1 Quart effective for pool algae prevention?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It combines a wetting agent with a 40% quaternary ammonium algicide to help prevent algae growth and keep water looking clearer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How should I dose BioGuard Back Up 2 for initial and weekly treatments?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Initial: 32 oz per 25,000 gal; weekly: 1 oz per 5,000 gal; every other week: 2 oz per 5,000 gal. Maintain pH 7.2–7.6 and 1–4 ppm chlorine.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BioGuard","offers":[{"title":"Default Title","offer_id":48216698126580,"sku":"B01N63TM7J","price":80.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/6652\/0820\/files\/bioguard-back-up-2-qt-2-pack-front-view.jpg?v=1778610330","url":"https:\/\/www.cerapatiogarden.com\/products\/bioguard-back-up-2-qt-2-pack-algae-prevention-for-pools-non-staining-clear-water","provider":"Cera Garden","version":"1.0","type":"link"}