Poolife® NST® Prime Tablets
Product Overview
Pool techs reach for Poolife® NST® Prime Tablets when they need to maintain chlorine levels without escalating cyanuric acid levels.
These octagon-shaped tablets contain 70.2% Calcium Hypochlorite, providing a high-concentration chlorine source that is completely free of stabilizer. Unlike standard trichlor pucks, Poolife® NST® Prime Tablets are slow-dissolving and designed for use in skimmers or dedicated feeders, making them a proven choice for managing water balance in pools where cyanuric acid is already high. Available in 4.5 lbs, 9 lbs, 20.2 lbs, and 39.4 lbs containers, they reliably handle sanitization while preventing the 'chlorine lock' associated with over-stabilization.
Benefits & What Makes It Different
70.2% Calcium Hypochlorite
This high-strength formula provides effective sanitization without the addition of cyanuric acid, keeping your water active and safe.
No Added Stabilizer
Because these tablets do not contain stabilizer, they are the standard specification for pools struggling with rising CYA levels that would otherwise require draining.
Extended-Release Octagon Shape
The unique geometry and formulation allow these tablets to dissolve slowly over several days, providing a consistent chlorine residual in skimmers or feeders.
Product Details
Calcium Hypochlorite 70.2%
1 tablet per 10,000 gallons every 5-7 days to maintain 1-4 ppm free chlorine.
Compatibility
- Compatible with salt chlorine generators, ozone, and mineral systems
- DANGER: Never mix with stabilized chlorine (Trichlor or Dichlor) or any other pool chemicals
- Wait until chlorine levels are between 1-4 ppm before swimming
When To Use This
Pro Tip
In our experience, if you are switching from traditional trichlor pucks to NST Prime, thoroughly clean your feeder or skimmer first; mixing Calcium Hypochlorite with trichlor is extremely dangerous and can cause a violent chemical reaction. In hot climates, remember that while these don't add stabilizer, you still need a baseline of 30-50 ppm CYA in the water to prevent the sun from burning off your chlorine instantly.
Common Questions & Instructions
Can I use Poolife NST Prime Tablets in a standard floating dispenser?
Yes, these tablets are designed for use in floaters, skimmers, and specific NST feeders; however, you must ensure the device is completely clean and never mix them with trichlor tablets.
How many NST Prime tablets do I need for a 10,000-gallon pool?
For routine maintenance, the standard dosing is typically 1 tablet per 10,000 gallons of pool water every 5 to 7 days to maintain a 1-4 ppm chlorine residual.
Will these tablets increase my pool's calcium hardness?
Since the active ingredient is Calcium Hypochlorite, these tablets will slightly increase calcium levels over time, which is often beneficial for plaster finishes but requires monitoring in hard water areas.
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.
