{"product_id":"bioguard-arctic-blue-shock-winter-pool-shock","title":"BioGuard Arctic Blue Shock | Winter Pool Shock","description":"\u003cp\u003e\u003cstrong\u003eBioGuard Arctic Blue Shock\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the first step in winterizing a pool — a quick-dissolving granular treatment that oxidizes, clarifies, and buffers in one application, so the water going under the cover is as clean as you can make it.\u003c\/p\u003e\n\u003cp\u003eClosing a pool well is entirely about what you leave in the water. A closed pool sits for five or six months with no circulation, no testing, and no corrections. Whatever organic load is present in October has all winter to break down, feed algae, and consume whatever sanitizer remains. That's why some pools come up clear in April and others come up as a recovery project — and the difference is almost always what happened at closing.\u003c\/p\u003e\n\u003cp\u003eArctic Blue Shock addresses that directly. It\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eoxidizes the organic waste\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eaccumulated over the swim season — body oils, sunscreen, cosmetics, nitrogen compounds — so it isn't sitting in the water all winter. It\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eclarifies\u003c\/strong\u003e, pulling fine suspended material into the filter before shutdown. And it\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ebuffers\u003c\/strong\u003e, moderating the water's chemistry heading into a long idle period.\u003c\/p\u003e\n\u003cp\u003eThe practical benefits show up at opening:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eless algae, lower chlorine demand, and clearer water\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ein the spring. High chlorine demand at opening is a genuinely expensive problem — a pool that burns through shock without holding a residual is a pool whose organic load was never dealt with the previous fall.\u003c\/p\u003e\n\u003cp\u003eThe granular formula is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003equick-dissolving and requires no dilution\u003c\/strong\u003e, so it broadcasts straight from the bottle with no bucket and no liquid to handle in cold weather. It's suitable for all pool surfaces, works with chlorinated, brominated, ozone, and ionization systems, and dosing is straightforward at\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1 lb per 6,000 gallons.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"lti-pro-tip\"\u003e\n\u003cp\u003e\u003cstrong\u003ePro Tip:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTime your closing to water temperature, not the calendar. Close when water is consistently\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ebelow about 60°F\u003c\/strong\u003e. Closing a warm pool leaves it warm enough under the cover for algae to keep growing on whatever organic material remains, which undoes most of what a careful closing was meant to accomplish. In the Intermountain West that usually means late September into October depending on elevation and the year. Waiting an extra two weeks for the water to cool costs nothing; closing early can cost you the entire spring opening.\u003c\/p\u003e\n\u003cdiv class=\"lti-pro-tip\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"lti-pro-tip\"\u003e\n\u003cp\u003e\u003cspan role=\"img\"\u003eBioGuard®\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BioGuard","offers":[{"title":"Default Title","offer_id":67305597174009,"sku":"rft1791365120665","price":14.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/5484\/2105\/files\/bioguard-arctic-blue-shock-winter-pool-shock_1.jpg?v=1791365126","url":"https:\/\/buyzenvilo.com\/products\/bioguard-arctic-blue-shock-winter-pool-shock","provider":"Buyzenvilo","version":"1.0","type":"link"}