Poolife® NST® Prime Tablets 39.4 lbs
Product Overview
A proven choice for continuous sanitization without driving up cyanuric acid levels.
For homeowners looking to avoid chlorine lock, Poolife NST Prime Tablets deliver reliable daily sanitization formulated with 70.2% Calcium Hypochlorite. This 39.4 lbs commercial-grade pail (also available in 4.5 lbs, 9 lbs, and 20.2 lbs sizes) provides slow-dissolving, non-stabilized chlorine that maintains a 1–3 ppm free chlorine residual without adding unwanted stabilizer or cyanuric acid to the pool.
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Benefits & What Makes It Different
Non-Stabilized 70.2% Calcium Hypochlorite
Delivers strong sanitizing power to destroy bacteria and algae without increasing cyanuric acid levels.
Patented Slow-Dissolving Octagon Shape
Engineered for controlled, extended erosion directly in your skimmer basket or dedicated NST feeder.
39.4 LB Bulk Supply
Provides high-capacity coverage for residential and commercial pools, reducing reordering frequency throughout the season.
Product Details
Calcium Hypochlorite (70.2%)
1 to 2 tablets per 10,000 gallons weekly in skimmer basket to maintain 1–3 ppm free chlorine residual.
Compatibility
- Compatible with salt chlorine generators, ozone, and mineral systems
- Do not mix directly with any other pool chemicals, especially trichlor or acid
When To Use This
Pro Tip
In sun-drenched regions where UV rapidly depletes chlorine, ensure your cyanuric acid is dialed in between 30–50 ppm using separate stabilizer before relying on NST Prime, ensuring the chlorine remains active without creeping out of balance.
Common Questions & Instructions
Can I put Poolife NST Prime Tablets in a standard trichlor chemical feeder or floater?
No. Never add Calcium Hypochlorite tablets to a feeder or floater that contains or previously contained trichlor or dichlor. Mixing these chemicals creates an immediate explosion and fire hazard. Use NST Prime tablets strictly in the skimmer basket or an approved, dedicated Poolife NST feeder.
Why choose non-stabilized Cal Hypo tablets over traditional trichlor tabs?
Trichlor tablets continually add stabilizer to pool water with every dose. Once cyanuric acid exceeds the ideal 30–50 ppm range, chlorine becomes less effective, often requiring costly draining and refilling. NST Prime delivers pure chlorination without raising CYA.
How do Poolife NST Prime Tablets affect overall water balance?
Because they contain Calcium Hypochlorite, these tablets will gradually add calcium hardness to your water. In areas with naturally hard fill water, monitor hardness to keep it within 200–400 ppm and maintain pH between 7.2–7.6 and total alkalinity between 80–120 ppm.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
