{"product_id":"jonas-winter-algaecide-1-gallon-10-percent-polyquat-non-foaming","title":"Jonas Winter Algaecide, 1 Gallon, 10 Percent Polyquat, Non-Foaming","description":"\n\u003cstyle\u003e\n  .jwalg-wrap, .jwalg-wrap * { box-sizing: border-box; }\n  .jwalg-wrap {\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #1a1a1a;\n    line-height: 1.6;\n  }\n\n  \/* Title bar (flat, no gradient) *\/\n  .jwalg-title {\n    border-bottom: 3px solid #0066cc;\n    padding-bottom: 12px;\n    margin-bottom: 20px;\n  }\n  .jwalg-title h2 {\n    margin: 0;\n    font-size: 1.6em;\n    color: #0066cc;\n    font-weight: 700;\n    letter-spacing: -0.01em;\n  }\n  .jwalg-subtitle {\n    margin: 4px 0 0;\n    color: #555;\n    font-size: 0.95em;\n    font-style: italic;\n  }\n\n  \/* Intro *\/\n  .jwalg-intro {\n    margin: 0 0 24px;\n    font-size: 1em;\n    color: #333;\n  }\n\n  \/* Spec table *\/\n  .jwalg-spec-section { margin-bottom: 24px; }\n  .jwalg-spec-heading {\n    font-size: 0.85em;\n    text-transform: uppercase;\n    letter-spacing: 0.06em;\n    color: #0066cc;\n    font-weight: 700;\n    margin: 0 0 8px;\n  }\n  .jwalg-spec-table {\n    width: 100%;\n    border-collapse: collapse;\n    font-size: 0.95em;\n  }\n  .jwalg-spec-table tr { border-bottom: 1px solid #e8ecf3; }\n  .jwalg-spec-table tr:last-child { border-bottom: none; }\n  .jwalg-spec-table th,\n  .jwalg-spec-table td {\n    text-align: left;\n    padding: 8px 12px;\n    vertical-align: top;\n  }\n  .jwalg-spec-table th {\n    font-weight: 600;\n    color: #0066cc;\n    width: 42%;\n    background: #f7f8fc;\n  }\n  .jwalg-spec-table td { color: #1a1a1a; }\n\n  \/* FAQ (optional) *\/\n  .jwalg-faq { margin-bottom: 24px; }\n  .jwalg-faq-item {\n    border-bottom: 1px solid #e8ecf3;\n    padding: 12px 0;\n  }\n  .jwalg-faq-item:last-child { border-bottom: none; }\n  .jwalg-faq-q {\n    font-weight: 600;\n    color: #0066cc;\n    margin: 0 0 4px;\n    font-size: 0.98em;\n  }\n  .jwalg-faq-a { margin: 0; color: #333; font-size: 0.95em; }\n\n  \/* Footer perks line *\/\n  .jwalg-footer {\n    border-top: 1px solid #e1e6ed;\n    padding-top: 14px;\n    margin-top: 24px;\n    text-align: center;\n    color: #555;\n    font-size: 0.9em;\n  }\n  .jwalg-footer .jwalg-dot {\n    color: #0066cc;\n    margin: 0 8px;\n    font-weight: 700;\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"jwalg-wrap\"\u003e\n\n  \u003cheader class=\"jwalg-title\"\u003e\n    \u003ch2\u003eJonas Winter Algaecide, 1 Gallon, 10 Percent Polyquat\u003c\/h2\u003e\n    \u003cp class=\"jwalg-subtitle\"\u003eThe one closing chemical you should not skip.\u003c\/p\u003e\n  \u003c\/header\u003e\n\n  \u003cp class=\"jwalg-intro\"\u003e\u003cstrong\u003eJonas winter algaecide\u003c\/strong\u003e, part NJ2503C4 and stocked under SKU PST-NJ2503C4, is a \u003cstrong\u003e1 gallon\u003c\/strong\u003e bottle of \u003cstrong\u003e10 percent polyquat\u003c\/strong\u003e, the algaecide class that pool professionals use for closings. Polyquat is non-foaming and contains no metals, so it cannot stain a plaster or vinyl surface the way a copper algaecide can. Add it at closing and it stays active in the water through the months when nothing is circulating and nothing is being tested, which is exactly when algae gets its foothold. A green opening costs far more in shock, labor, and filter runtime than a gallon of algaecide does.\u003c\/p\u003e\n\n  \u003csection class=\"jwalg-spec-section\"\u003e\n    \u003cdiv class=\"jwalg-spec-heading\"\u003eSpecifications\u003c\/div\u003e\n    \u003ctable class=\"jwalg-spec-table\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eJonas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModel \/ MPN\u003c\/th\u003e\n\u003ctd\u003eNJ2503C4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003ePST-NJ2503C4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eWinter algaecide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e1 gallon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eActive\u003c\/th\u003e\n\u003ctd\u003e10 percent polyquat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFoaming\u003c\/th\u003e\n\u003ctd\u003eNon-foaming\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMetals\u003c\/th\u003e\n\u003ctd\u003eNone, will not stain surfaces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eAdd directly to the pool with the pump running\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeason\u003c\/th\u003e\n\u003ctd\u003eFall closing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003ctd\u003eCool, dry, sealed, away from oxidizers\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/section\u003e\n\n  \n  \u003csection class=\"jwalg-faq\"\u003e\n    \u003cdiv class=\"jwalg-spec-heading\"\u003eGood to Know\u003c\/div\u003e\n    \n    \u003cdiv class=\"jwalg-faq-item\"\u003e\n      \u003cp class=\"jwalg-faq-q\"\u003eWhy polyquat instead of a cheaper algaecide?\u003c\/p\u003e\n      \u003cp class=\"jwalg-faq-a\"\u003eCopper algaecides can stain, and quaternary ammonium algaecides foam. \u003cstrong\u003ePolyquat\u003c\/strong\u003e does neither, which is why it is the standard choice for a pool that will sit closed for months.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv class=\"jwalg-faq-item\"\u003e\n      \u003cp class=\"jwalg-faq-q\"\u003eWhen do I add it during a closing?\u003c\/p\u003e\n      \u003cp class=\"jwalg-faq-a\"\u003eAfter the water is balanced and the pool has been shocked and the chlorine has come back down. Adding algaecide into a high chlorine pool wastes it, because the shock oxidizes the algaecide.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv class=\"jwalg-faq-item\"\u003e\n      \u003cp class=\"jwalg-faq-q\"\u003eHow much do I need?\u003c\/p\u003e\n      \u003cp class=\"jwalg-faq-a\"\u003eFollow the label dose for your pool volume. A mesh safety cover lets light and rain through, so those pools generally need the higher end of the range.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/section\u003e\n  \n\n  \u003cfooter class=\"jwalg-footer\"\u003e\n    Free Shipping\u003cspan class=\"jwalg-dot\"\u003e•\u003c\/span\u003e30-Day Returns\u003cspan class=\"jwalg-dot\"\u003e•\u003c\/span\u003eWarranty Backed\u003cspan class=\"jwalg-dot\"\u003e•\u003c\/span\u003eAuthorized Jonas Dealer\n  \u003c\/footer\u003e\n\n\u003c\/div\u003e\n","brand":"Jonas","offers":[{"title":"Default Title","offer_id":44289628864577,"sku":"PST-NJ2503C4","price":40.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/1623\/0209\/files\/Chemicals___Kits_037_8a6e0467-5e7e-41a3-9295-7a6273d3f6e1.png?v=1785943041","url":"https:\/\/www.pstpoolsupplies.com\/products\/jonas-winter-algaecide-1-gallon-10-percent-polyquat-non-foaming","provider":"PST Pool Supplies","version":"1.0","type":"link"}