{"product_id":"poolife-nst-prime-cal-hypo-chlorine-tablets-4-5-lb","title":"Poolife NST Prime Cal Hypo Chlorine Tablets - 4.5 lb","description":"\u003cdiv style=\"font-family:inherit;color:#1f2d33;line-height:1.6;max-width:100%;\"\u003e\n\u003cdiv style=\"background:#0b3954;color:#fff;border-radius:8px;padding:12px 16px;margin:0 0 12px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;\"\u003e\n\u003cstrong style=\"font-size:1.08em;letter-spacing:0.02em;\"\u003eFree Shipping on this item in the USA\u003c\/strong\u003e\u003cspan style=\"opacity:0.9;\"\u003eOrder online today and we'll ship it to your door free.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef7f8;border-left:5px solid #0e7c86;border-radius:8px;padding:18px 20px;margin:0 0 1.4em;\"\u003e\n\u003ch2 style=\"color:#0b3954;font-size:1.3em;margin:0 0 0.6em;\"\u003eLong-lasting pool sanitation without CYA buildup\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em;\"\u003ePoolife NST Prime Cal Hypo Chlorine Tablets provide slow-dissolving chlorine sanitation for clear, swim-ready pool water. Their calcium hypochlorite formula does not add cyanuric acid (CYA), helping prevent CYA buildup and chlorine lock.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em;\"\u003eThe 4.5 lb size offers a smaller package option for pool owners choosing NST Prime tablets. Add tablets as needed based on pool size and usage, and test regularly to maintain 1–4 ppm free chlorine.\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-top:6px;\"\u003e\n\u003cdiv style=\"flex:1 1 110px;min-width:110px;background:#fff;border:1px solid #d5e6e8;border-radius:8px;padding:10px 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:0.78em;text-transform:uppercase;letter-spacing:0.04em;color:#0e7c86;font-weight:600;\"\u003eUse In\u003c\/div\u003e\n\u003cdiv style=\"font-size:1.15em;font-weight:700;color:#0b3954;\"\u003eSwimming pools\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px;min-width:110px;background:#fff;border:1px solid #d5e6e8;border-radius:8px;padding:10px 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:0.78em;text-transform:uppercase;letter-spacing:0.04em;color:#0e7c86;font-weight:600;\"\u003eType\u003c\/div\u003e\n\u003cdiv style=\"font-size:1.15em;font-weight:700;color:#0b3954;\"\u003eCal Hypo chlorine tablets\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px;min-width:110px;background:#fff;border:1px solid #d5e6e8;border-radius:8px;padding:10px 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:0.78em;text-transform:uppercase;letter-spacing:0.04em;color:#0e7c86;font-weight:600;\"\u003eActive\u003c\/div\u003e\n\u003cdiv style=\"font-size:1.15em;font-weight:700;color:#0b3954;\"\u003eCalcium hypochlorite\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 110px;min-width:110px;background:#fff;border:1px solid #d5e6e8;border-radius:8px;padding:10px 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:0.78em;text-transform:uppercase;letter-spacing:0.04em;color:#0e7c86;font-weight:600;\"\u003eSize\u003c\/div\u003e\n\u003cdiv style=\"font-size:1.15em;font-weight:700;color:#0b3954;\"\u003e4.5 lb\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color:#0b3954;font-size:1.35em;margin:1.6em 0 0.6em;padding-bottom:6px;border-bottom:2px solid #0e7c86;\"\u003eSanitize without adding CYA\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em;\"\u003eNST Prime uses calcium hypochlorite to sanitize pool water without adding cyanuric acid. Avoiding CYA buildup helps reduce the risk of chlorine lock.\u003c\/p\u003e\n\u003ch2 style=\"color:#0b3954;font-size:1.35em;margin:1.6em 0 0.6em;padding-bottom:6px;border-bottom:2px solid #0e7c86;\"\u003eSlow-dissolving protection\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em;\"\u003eThe octagon-shaped tablets are formulated to dissolve slowly, providing long-lasting sanitation and days of hands-free protection.\u003c\/p\u003e\n\u003ch2 style=\"color:#0b3954;font-size:1.35em;margin:1.6em 0 0.6em;padding-bottom:6px;border-bottom:2px solid #0e7c86;\"\u003eChoose a delivery method\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em;\"\u003eUse the tablets in an NST Cal Hypo feeder, an NST Floater, or directly in the skimmer. Any automatic feeder used must be specifically designed for Cal Hypo tablets.\u003c\/p\u003e\n\u003ch2 style=\"color:#0b3954;font-size:1.35em;margin:1.6em 0 0.6em;padding-bottom:6px;border-bottom:2px solid #0e7c86;\"\u003eKeep water clear and balanced\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em;\"\u003eTest pool water regularly and maintain 1–4 ppm free chlorine. Add tablets as needed based on pool size and usage, following the container label.\u003c\/p\u003e\n\u003ch2 style=\"color:#0b3954;font-size:1.35em;margin:1.6em 0 0.6em;padding-bottom:6px;border-bottom:2px solid #0e7c86;\"\u003eKey Features and Benefits\u003c\/h2\u003e\n\u003cul style=\"display:flex;flex-wrap:wrap;gap:12px;padding:0;margin:0 0 1em;\"\u003e\n\u003cli style=\"flex:1 1 230px;min-width:220px;list-style:none;background:#fff;border:1px solid #d5e6e8;border-top:3px solid #0e7c86;border-radius:8px;padding:12px 14px;margin:0;\"\u003e\n\u003cstrong style=\"color:#0b3954;display:block;margin-bottom:2px;\"\u003eLong-lasting sanitation\u003c\/strong\u003eSlow-dissolving Cal Hypo tablets provide extended pool sanitization.\u003c\/li\u003e\n\u003cli style=\"flex:1 1 230px;min-width:220px;list-style:none;background:#fff;border:1px solid #d5e6e8;border-top:3px solid #0e7c86;border-radius:8px;padding:12px 14px;margin:0;\"\u003e\n\u003cstrong style=\"color:#0b3954;display:block;margin-bottom:2px;\"\u003eNo CYA buildup\u003c\/strong\u003eSanitizes without adding cyanuric acid that can contribute to chlorine lock.\u003c\/li\u003e\n\u003cli style=\"flex:1 1 230px;min-width:220px;list-style:none;background:#fff;border:1px solid #d5e6e8;border-top:3px solid #0e7c86;border-radius:8px;padding:12px 14px;margin:0;\"\u003e\n\u003cstrong style=\"color:#0b3954;display:block;margin-bottom:2px;\"\u003eDays of protection\u003c\/strong\u003eThe slow-dissolving formula is designed for days of hands-free protection.\u003c\/li\u003e\n\u003cli style=\"flex:1 1 230px;min-width:220px;list-style:none;background:#fff;border:1px solid #d5e6e8;border-top:3px solid #0e7c86;border-radius:8px;padding:12px 14px;margin:0;\"\u003e\n\u003cstrong style=\"color:#0b3954;display:block;margin-bottom:2px;\"\u003eClear pool water\u003c\/strong\u003eHelps keep pool water clear and swim-ready.\u003c\/li\u003e\n\u003cli style=\"flex:1 1 230px;min-width:220px;list-style:none;background:#fff;border:1px solid #d5e6e8;border-top:3px solid #0e7c86;border-radius:8px;padding:12px 14px;margin:0;\"\u003e\n\u003cstrong style=\"color:#0b3954;display:block;margin-bottom:2px;\"\u003eFlexible application\u003c\/strong\u003eUse in an NST Cal Hypo feeder, NST Floater, or directly in the skimmer.\u003c\/li\u003e\n\u003cli style=\"flex:1 1 230px;min-width:220px;list-style:none;background:#fff;border:1px solid #d5e6e8;border-top:3px solid #0e7c86;border-radius:8px;padding:12px 14px;margin:0;\"\u003e\n\u003cstrong style=\"color:#0b3954;display:block;margin-bottom:2px;\"\u003eDesigned for Cal Hypo feeders\u003c\/strong\u003eUse only in an automatic feeder specifically designed for calcium hypochlorite tablets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color:#0b3954;font-size:1.35em;margin:1.6em 0 0.6em;padding-bottom:6px;border-bottom:2px solid #0e7c86;\"\u003eProduct Details\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 1em;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:0.95em;\"\u003e\n\u003ccaption style=\"text-align:left;font-size:0.85em;color:#5b6b70;padding-bottom:6px;\"\u003ePoolife NST Prime 4.5 lb specifications\u003c\/caption\u003e\n\u003cthead\u003e\u003ctr style=\"background:#0b3954;color:#fff;\"\u003e\n\u003cth scope=\"col\" style=\"text-align:left;padding:10px 12px;border:1px solid #0b3954;\"\u003eProduct Detail\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"text-align:left;padding:10px 12px;border:1px solid #0b3954;\"\u003eInformation\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#eef7f8;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eBrand\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003ePoolife™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eProduct Name\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eNST Prime Cal Hypo Chlorine Tablets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#eef7f8;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eSize\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003e4.5 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eManufacturer SKU\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003e22427\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#eef7f8;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eUPC\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003e073187224279\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eFor Use In\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eSwimming pools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#eef7f8;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eProduct Type\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eChlorine sanitizer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eForm\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eSlow-dissolving octagon-shaped tablets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#eef7f8;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eActive Ingredient(s)\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eCalcium hypochlorite (Cal Hypo); percentage: Not specified in reviewed product details\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eDosage\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eMaintain 1–4 ppm free chlorine; dose per gallons: Not specified in reviewed product details\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#eef7f8;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eTreats\/Coverage\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eNot specified in reviewed product details\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eStabilized (CYA)\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eNo; the product sanitizes without adding CYA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#eef7f8;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eWait to Swim\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eNot specified in reviewed product details\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eCompatible With\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eNST Cal Hypo feeder, NST Floater, or direct skimmer application. Do not use in feeders intended for Trichlor tablets.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#eef7f8;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eStorage\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eStore in a cool, dry place. Shelf life stated as up to 2 years when stored this way.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eHazard\/Shipping class\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eNot specified in reviewed product details\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#eef7f8;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:9px 12px;border:1px solid #d5e6e8;color:#0b3954;width:42%;font-weight:600;\"\u003eShipping Weight\u003c\/th\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #d5e6e8;\"\u003eAbout 5.0 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2 style=\"color:#0b3954;font-size:1.35em;margin:1.6em 0 0.6em;padding-bottom:6px;border-bottom:2px solid #0e7c86;\"\u003eHow to Use\u003c\/h2\u003e\n\u003col style=\"list-style:none;padding:0;margin:0 0 1em;\"\u003e\n\u003cli style=\"display:flex;gap:12px;align-items:flex-start;margin:0 0 10px;\"\u003e\n\u003cspan aria-hidden=\"true\" style=\"flex:0 0 30px;height:30px;border-radius:50%;background:#0e7c86;color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;\"\u003e1\u003c\/span\u003e\u003cspan\u003e\u003cstrong style=\"color:#0b3954;\"\u003eTest the water:\u003c\/strong\u003e Test pool water regularly before adjusting tablet use.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;gap:12px;align-items:flex-start;margin:0 0 10px;\"\u003e\n\u003cspan aria-hidden=\"true\" style=\"flex:0 0 30px;height:30px;border-radius:50%;background:#0e7c86;color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;\"\u003e2\u003c\/span\u003e\u003cspan\u003e\u003cstrong style=\"color:#0b3954;\"\u003eChoose an application method:\u003c\/strong\u003e Use an NST Cal Hypo feeder, NST Floater, or place tablets directly in the skimmer.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;gap:12px;align-items:flex-start;margin:0 0 10px;\"\u003e\n\u003cspan aria-hidden=\"true\" style=\"flex:0 0 30px;height:30px;border-radius:50%;background:#0e7c86;color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;\"\u003e3\u003c\/span\u003e\u003cspan\u003e\u003cstrong style=\"color:#0b3954;\"\u003eUse the correct feeder:\u003c\/strong\u003e For automatic dosing, use only a feeder specifically designed for Cal Hypo tablets, such as the NST Feeder.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;gap:12px;align-items:flex-start;margin:0 0 10px;\"\u003e\n\u003cspan aria-hidden=\"true\" style=\"flex:0 0 30px;height:30px;border-radius:50%;background:#0e7c86;color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;\"\u003e4\u003c\/span\u003e\u003cspan\u003e\u003cstrong style=\"color:#0b3954;\"\u003eMaintain free chlorine:\u003c\/strong\u003e Keep free chlorine in the 1–4 ppm range.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;gap:12px;align-items:flex-start;margin:0 0 10px;\"\u003e\n\u003cspan aria-hidden=\"true\" style=\"flex:0 0 30px;height:30px;border-radius:50%;background:#0e7c86;color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;\"\u003e5\u003c\/span\u003e\u003cspan\u003e\u003cstrong style=\"color:#0b3954;\"\u003eAdjust as needed:\u003c\/strong\u003e Add tablets as needed based on pool size and usage, starting with fewer and increasing as needed.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;gap:12px;align-items:flex-start;margin:0 0 10px;\"\u003e\n\u003cspan aria-hidden=\"true\" style=\"flex:0 0 30px;height:30px;border-radius:50%;background:#0e7c86;color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;\"\u003e6\u003c\/span\u003e\u003cspan\u003e\u003cstrong style=\"color:#0b3954;\"\u003eStore properly:\u003c\/strong\u003e Store tablets in a cool, dry place.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2 style=\"color:#0b3954;font-size:1.35em;margin:1.6em 0 0.6em;padding-bottom:6px;border-bottom:2px solid #0e7c86;\"\u003eImportant Compatibility and Safety Notes\u003c\/h2\u003e\n\u003cdiv style=\"background:#fff8e6;border:1px solid #e0b44c;border-left:5px solid #e0b44c;border-radius:8px;padding:14px 16px;margin:0 0 1em;\"\u003e\n\u003ch3 style=\"color:#8a5a00;font-size:1.05em;margin:0 0 0.4em;\"\u003eCompatibility and mixing\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eUse in an NST Cal Hypo feeder, an NST Floater, or directly in the skimmer. Automatic chlorinators must be specifically designed for Cal Hypo tablets; do not use these tablets in feeders intended for Trichlor. Never mix Cal Hypo tablets with Trichlor or Dichlor tablets in the same feeder, skimmer, or floater because a dangerous chemical reaction may occur. Chlorine products are not for biguanide\/PHMB pools.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdf1f0;border:1px solid #e4a29b;border-left:5px solid #e4a29b;border-radius:8px;padding:14px 16px;margin:0 0 1em;\"\u003e\n\u003ch3 style=\"color:#b42318;font-size:1.05em;margin:0 0 0.4em;\"\u003eSafety First\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eNever mix these tablets with Trichlor or Dichlor tablets, including in the same feeder, skimmer, or floater. Use only in a feeder designed for Cal Hypo tablets. Store in a cool, dry place. Protective equipment requirements: Not specified in reviewed product details. Keep out of reach of children and pets, and always read and follow the full label directions and precautions on your container.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color:#0b3954;font-size:1.35em;margin:1.6em 0 0.6em;padding-bottom:6px;border-bottom:2px solid #0e7c86;\"\u003eWhy Choose Poolife NST Prime?\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em;\"\u003ePoolife NST Prime provides long-lasting Cal Hypo sanitation without adding CYA, helping avoid CYA buildup and chlorine lock. Its slow-dissolving tablets can be used with specified NST delivery options or directly in the skimmer.\u003c\/p\u003e\n\u003ch3 style=\"color:#0b3954;font-size:1.08em;margin:1.2em 0 0.3em;\"\u003eIdeal For\u003c\/h3\u003e\n\u003cul style=\"padding-left:0;margin:0 0 1em;list-style:none;\"\u003e\n\u003cli style=\"margin:0 0 6px;padding-left:26px;position:relative;\"\u003e\n\u003cspan aria-hidden=\"true\" style=\"position:absolute;left:0;color:#0e7c86;font-weight:700;\"\u003e✓\u003c\/span\u003ePool owners seeking chlorine sanitation without added CYA\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;padding-left:26px;position:relative;\"\u003e\n\u003cspan aria-hidden=\"true\" style=\"position:absolute;left:0;color:#0e7c86;font-weight:700;\"\u003e✓\u003c\/span\u003ePeople looking for slow-dissolving tablets for ongoing sanitation\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;padding-left:26px;position:relative;\"\u003e\n\u003cspan aria-hidden=\"true\" style=\"position:absolute;left:0;color:#0e7c86;font-weight:700;\"\u003e✓\u003c\/span\u003ePool owners who want to use an NST Cal Hypo feeder or NST Floater\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;padding-left:26px;position:relative;\"\u003e\n\u003cspan aria-hidden=\"true\" style=\"position:absolute;left:0;color:#0e7c86;font-weight:700;\"\u003e✓\u003c\/span\u003ePool owners who prefer direct skimmer application\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;padding-left:26px;position:relative;\"\u003e\n\u003cspan aria-hidden=\"true\" style=\"position:absolute;left:0;color:#0e7c86;font-weight:700;\"\u003e✓\u003c\/span\u003eThose monitoring free chlorine and adjusting tablet use as needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color:#0b3954;font-size:1.35em;margin:1.6em 0 0.6em;padding-bottom:6px;border-bottom:2px solid #0e7c86;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"border:1px solid #d5e6e8;border-radius:8px;padding:12px 16px;margin:0 0 10px;background:#fff;\"\u003e\n\u003ch3 style=\"color:#0b3954;font-size:1.03em;margin:0 0 0.35em;\"\u003eHow often should I use NST Prime tablets?\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eAdd tablets as needed to maintain 1–4 ppm free chlorine. The amount and frequency depend on pool size and usage, so test the water regularly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #d5e6e8;border-radius:8px;padding:12px 16px;margin:0 0 10px;background:#fff;\"\u003e\n\u003ch3 style=\"color:#0b3954;font-size:1.03em;margin:0 0 0.35em;\"\u003eCan I use NST Prime in a saltwater pool?\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eYes, when supplemental chlorine is needed. Monitor water balance closely.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #d5e6e8;border-radius:8px;padding:12px 16px;margin:0 0 10px;background:#fff;\"\u003e\n\u003ch3 style=\"color:#0b3954;font-size:1.03em;margin:0 0 0.35em;\"\u003eWhat is the shelf life?\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eWhen stored in a cool, dry place, the tablets remain effective for up to 2 years.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #d5e6e8;border-radius:8px;padding:12px 16px;margin:0 0 10px;background:#fff;\"\u003e\n\u003ch3 style=\"color:#0b3954;font-size:1.03em;margin:0 0 0.35em;\"\u003eHow are Cal Hypo tablets different from Trichlor tablets?\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eCal Hypo tablets sanitize without adding CYA. Trichlor tablets contain CYA, which can build up and reduce chlorine effectiveness over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #d5e6e8;border-radius:8px;padding:12px 16px;margin:0 0 10px;background:#fff;\"\u003e\n\u003ch3 style=\"color:#0b3954;font-size:1.03em;margin:0 0 0.35em;\"\u003eCan I use NST Prime in any automatic chlorinator?\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eNo. Use only an automatic feeder specifically designed for Cal Hypo tablets, such as the NST Feeder. Do not use them in feeders intended for Trichlor tablets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #d5e6e8;border-radius:8px;padding:12px 16px;margin:0 0 10px;background:#fff;\"\u003e\n\u003ch3 style=\"color:#0b3954;font-size:1.03em;margin:0 0 0.35em;\"\u003eHow many tablets should I add?\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eThe amount depends on pool size, temperature, and bather load. Test the water first, start with fewer tablets, and adjust as needed to maintain 1–4 ppm free chlorine.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #d5e6e8;border-radius:8px;padding:12px 16px;margin:0 0 10px;background:#fff;\"\u003e\n\u003ch3 style=\"color:#0b3954;font-size:1.03em;margin:0 0 0.35em;\"\u003eCan I mix these tablets with other chlorine products?\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eNo. Never mix Cal Hypo tablets with Trichlor or Dichlor tablets in the same feeder, skimmer, or floater. Mixing may cause a dangerous chemical reaction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #d5e6e8;border-radius:8px;padding:12px 16px;margin:0 0 10px;background:#fff;\"\u003e\n\u003ch3 style=\"color:#0b3954;font-size:1.03em;margin:0 0 0.35em;\"\u003eCan these tablets be used directly in the skimmer?\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eYes. The product directions list direct skimmer placement as an application method. Do not mix them with other types of chlorine in the skimmer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Poolife","offers":[{"title":"Default Title","offer_id":67823723905211,"sku":"22427","price":53.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0269\/2625\/2077\/files\/poolife-22427.jpg?v=1792679711","url":"https:\/\/hottubpirate.com\/products\/poolife-nst-prime-cal-hypo-chlorine-tablets-4-5-lb","provider":"Hot Tub Pirate","version":"1.0","type":"link"}