{"product_id":"hth-52039-shock-ultra-cal-hypo-pool-shock-no-cya-1-pack","title":"HTH 52039 Shock Ultra: Cal Hypo Pool Shock, No CYA, 1 Pack","description":"\u003ch2\u003eCrystal-clear pool water starts here\u003c\/h2\u003e\n\u003cp\u003eMeet HTH Shock Ultra, a Cal Hypo based pool shock designed to quickly raise chlorine levels, control bacteria, algae, stains, and scale, and soften water for a more inviting swim. This all-in-one treatment works with all pool types, including vinyl liners and saltwater systems, helping you maintain sparkling water with less effort.\u003c\/p\u003e\n\u003ch3\u003eWhy shoppers choose HTH Shock Ultra\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIncreases chlorine levels to sanitize and protect your pool between full cleanings\u003c\/li\u003e\n\u003cli\u003ePrevents bacteria, algae, stains, and scale while reducing skin and eye irritation\u003c\/li\u003e\n\u003cli\u003eImproves circulation and filtration so the water stays clearer longer\u003c\/li\u003e\n\u003cli\u003eCal Hypo based formula sanitizes without adding cyanuric acid to avoid overstabilization\u003c\/li\u003e\n\u003cli\u003eBuilt in visible blue action shows when the product is actively working\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOne of the standout advantages is compatibility with every pool type, from vinyl-lined to saltwater systems. For the best results, pair with HTH 6-Way Test Strips and test your water twice weekly. Regular weekly use can help address the majority of common pool problems within 24 hours, restoring a visibly brighter, crisper appearance.\u003c\/p\u003e\n\u003ch3\u003eHow to use with confidence\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTest water first and balance as needed with the test strips\u003c\/li\u003e\n\u003cli\u003eFollow the label directions to dissolve the shock in your pool water\u003c\/li\u003e\n\u003cli\u003eRe-test and adjust to maintain clear, comfortable water\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith HTH Shock Ultra, you have a straightforward option for maintaining pool clarity, especially after heavy usage or seasonal openings. The formula avoids CYA buildup, helping you avoid subtle shifts in chemical balance over time.\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 HTH 52039 Shock Ultra different from other pool shocks?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Cal Hypo based formula sanitizes without adding CYA, helping prevent chemical overstabilization while boosting clarity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I shock my pool with HTH Shock Ultra?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Test water twice weekly and use as needed; regular weekly shocks aim to restore crystal clarity within 24 hours.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"HTH","offers":[{"title":"Default Title","offer_id":45740242895034,"sku":"B09R81TC25","price":32.81,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/3536\/8890\/files\/hth-shock-ultra-packaging.jpg?v=1774771007","url":"https:\/\/gardencanada.ca\/products\/hth-52039-shock-ultra-cal-hypo-pool-shock-no-cya-1-pack","provider":"Garden Canada","version":"1.0","type":"link"}