{"product_id":"poolife-back-to-blue-algae-pool-shock-system-4-6-lb-kit-with-78-cal-hypo-flocculant-rapid-24-hour-green-water-recovery","title":"POOLIFE Back to Blue Algae Pool Shock System - 4.6 lb Kit with 78% Cal Hypo \u0026 Flocculant, Rapid 24‑Hour Green Water Recovery","description":"\u003cstrong\u003ePOOLIFE Back to Blue Algae Pool Shock System is a two-part, high‑potency kit that kills heavy algae and clears green pool water to restore swim-ready clarity in about 24 hours.\u003c\/strong\u003e\n\n\u003cp\u003eIf your pool has turned green after a storm, seasonal neglect, or an algae bloom, this kit provides a concentrated, professional-strength reset. The system combines a 78% active calcium hypochlorite shock for aggressive sanitizing and phosphate reduction with a fast-acting flocculant that gathers dead algae and microscopic particles so they settle for easy removal. Each 4.6 lb kit treats up to 15,000 gallons and is intended as a targeted recovery step rather than daily dosing.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly will the pool clear after treatment?\u003c\/h3\u003e\n\u003cp\u003eMost pools treated with this two-part system show dramatic improvement within 24 hours, depending on the severity of the algae and water chemistry. The shock component kills active algae while the flocculant causes suspended solids to clump and sink so you can vacuum or filter them out.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVisible clarity often returns in a single day under typical conditions.\u003c\/li\u003e\n  \u003cli\u003eSevere blooms may require brushing and repeated vacuuming after settling.\u003c\/li\u003e\n  \u003cli\u003eFollow-up filtration and testing speeds final recovery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat exactly is in the kit and how does each part work?\u003c\/h3\u003e\n\u003cp\u003eThe kit pairs a high-strength calcium hypochlorite shock with a specialized flocculant. The Cal Hypo delivers rapid, high-level chlorine to neutralize algae and reduce phosphates, while the flocculant bonds to tiny particles so they fall out of suspension.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e78% active Cal Hypo: fast algicide and oxidizer for large organic loads.\u003c\/li\u003e\n  \u003cli\u003eFlocculant: clarifies water by aggregating dead algae and fine debris.\u003c\/li\u003e\n  \u003cli\u003eCombined use simplifies shock, chlorination, and clarifying into one recovery step.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use the kit safely and effectively?\u003c\/h3\u003e\n\u003cp\u003eRead label directions before use and handle chemicals with gloves and eye protection. Treat at night or when pump\/filter can run afterward; brush pool surfaces, then add shock followed by flocculant as directed, run filtration, let solids settle, and vacuum or filter out debris.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTest and adjust pH and alkalinity before shocking for best results.\u003c\/li\u003e\n  \u003cli\u003eRun filter continuously until water is clear; backwash if necessary.\u003c\/li\u003e\n  \u003cli\u003eWait the recommended chlorine residual drop before resuming swimming.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this damage my pool equipment or affect water balance?\u003c\/h3\u003e\n\u003cp\u003eWhen used according to instructions, the kit safely treats pools, but high-strength oxidizers can raise calcium and chlorine levels temporarily. Maintain proper water balance and follow manufacturer guidance to protect liners, surfaces, and equipment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMonitor calcium hardness and total chlorine after treatment.\u003c\/li\u003e\n  \u003cli\u003eAvoid mixing chemicals directly; add separately as instructed.\u003c\/li\u003e\n  \u003cli\u003eAllow filter to remove settled solids to reduce strain on equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: POOLIFE Back to Blue is designed for pool owners, service professionals, and caretakers facing serious green water or heavy algae problems—especially after winter storage, storm influx, or long periods without maintenance. It’s a targeted recovery solution for vinyl, concrete, and fiberglass pools up to 15,000 gallons that need a fast, powerful reset rather than routine day‑to‑day sanitizing.\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: How many gallons does one 4.6 lb kit treat?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: One 4.6 lb POOLIFE Back to Blue kit treats up to 15,000 gallons when used as directed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this kit for regular weekly shocks?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This system is formulated for heavy algae recovery, not routine weekly maintenance; use it only for green-to-clean treatments.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"POOLIFE","offers":[{"title":"Default Title","offer_id":56829779411284,"sku":"B06XS3YV78","price":84.22,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/poolife-front-packaging-back-to-blue-kit.jpg?v=1786998285","url":"https:\/\/gardenluxe.co.uk\/products\/poolife-back-to-blue-algae-pool-shock-system-4-6-lb-kit-with-78-cal-hypo-flocculant-rapid-24-hour-green-water-recovery","provider":"Gardenluxe Uk","version":"1.0","type":"link"}