Description
Poolife NST Prime Cal Hypo tablets: slow-dissolving pool chlorine without added CYA
Poolife NST Prime Cal Hypo Chlorine Tablets are slow-dissolving calcium hypochlorite tablets that sanitize pool water without adding cyanuric acid (CYA). They are for pool owners seeking ongoing chlorine sanitation and an alternative to stabilized trichlor tablets, with use in the specified NST delivery options and only as directed on the container label.
The 20.2 lb package is a larger supply option for pool owners who want to keep Poolife NST Prime on hand for ongoing pool care. Follow the label and test regularly to maintain 1–4 ppm free available chlorine.
NST Prime Cal Hypo tablets sanitize without adding CYA
NST Prime uses calcium hypochlorite to sanitize pool water without adding cyanuric acid. Unlike stabilized trichlor tablets, it does not add CYA, which can build up in pool water.
Slow-dissolving tablets for up to 7 days of sanitation
The octagon-shaped tablets are described on the product label as providing continuous sanitation for 7 days. Dissolution can vary with bather load, water flow, pump run time, and other conditions, so test the water and follow the label rather than relying on a fixed replenishment schedule.
Use an NST Cal Hypo feeder or other listed method
Use an NST Cal Hypo feeder, NST Floater, or direct skimmer application as directed for the product. Automatic feeders must be designed for Cal Hypo tablets. Do not put the tablets in a skimmer or feeder that contains another chlorinating compound.
Test water and follow label directions
Maintain free available chlorine at 1–4 ppm and test frequently with a reliable test kit. The container label provides dosing directions; follow them and adjust the feeder as directed.
Part of the Poolife NST pool-care system
Poolife describes NST Prime as an alternative to 3-inch stabilized chlorine tablets. The NST three-step program also includes NST Purify Oxidizer and NST Patrol Algaecide; follow the container labels when using any pool-care products together.
Key Features and Benefits
- Long-lasting sanitationSlow-dissolving Cal Hypo tablets are labeled to provide continuous sanitation for 7 days; actual dissolution varies with pool conditions.
- No added CYASanitizes without adding cyanuric acid, unlike stabilized trichlor tablets.
- Octagon-shaped tabletsCalcium hypochlorite tablets formulated to dissolve slowly.
- Flexible listed applicationUse with an NST Cal Hypo feeder, NST Floater, or direct skimmer application as directed.
- Pool water targetMaintain free available chlorine at 1–4 ppm and test frequently.
- Designed for Cal Hypo useUse only in an automatic feeder designed for calcium hypochlorite tablets; do not mix with other chlorinating compounds.
Product Details
| Product Detail | Information |
|---|---|
| Brand | Poolife™ |
| Product Name | NST Prime Cal Hypo Chlorine Tablets |
| Size | 20.2 lb |
| Manufacturer SKU | 22425 |
| UPC | 073187224255 |
| For Use In | Swimming pools |
| Product Type | Chlorine sanitizer |
| Form | Slow-dissolving octagon-shaped tablets |
| Active Ingredient(s) | Calcium hypochlorite (Cal Hypo); percentage: Not specified |
| Dosage | Maintain 1–4 ppm free available chlorine. Follow the container label for dosage. |
| Treats/Coverage | Not specified |
| Sanitation Duration | Label describes continuous sanitation for 7 days; dissolution varies with bather load, water flow, pump run time, and other conditions. |
| Stabilized (CYA) | No; the product sanitizes without adding CYA. |
| Wait to Swim | The label says not to enter the pool until free available chlorine is 1–4 ppm. Test the water and follow all container-label directions. |
| Compatible With | NST Cal Hypo feeder, NST Floater, or direct skimmer application as directed. It is commonly used with chlorine pools, salt chlorine generators, ozone, and mineral systems; follow the container label. Do not use in a feeder or skimmer containing another chlorinating compound. |
| Pool Surface Compatibility | Check the product label or consult a pool-care professional for guidance on your pool surface. |
| Storage | Store in its tightly closed container in a cool, dry, well-ventilated area, away from heat and open flame. Keep dry and use clean, dry utensils. |
| Item Identification | SKUs: 22427 (4.5 lb) and 22426 (39.4 lb). UPC: Not specified. |
| Hazard/Shipping class | Hazard/shipping class is not specified. The label identifies the product as a strong oxidizing agent and provides handling precautions. |
| Shipping Weight | About 22.2 lb |
How to Use
- Test the water: Test frequently with a reliable test kit. Maintain free available chlorine at 1–4 ppm.
- Choose a listed application method: Use an NST Cal Hypo feeder, NST Floater, or direct skimmer application as directed on the container label.
- Check the feeder or skimmer: Use an automatic feeder designed for Cal Hypo tablets. Do not use the tablets where another chlorinating compound is being used.
- Set and adjust the feed rate: Follow the feeder manual and container label to set the feed rate. The label says dissolution varies with bather load, water flow, pump run time, and other conditions.
- Use the label for tablet quantity: Follow the container label for tablet quantity; do not estimate a dose from package size.
- Confirm chlorine before swimming: Do not enter the pool until free available chlorine is 1–4 ppm, as stated on the product label.
- Store safely: Keep the product tightly closed, dry, and in a cool, well-ventilated area away from heat and open flame.
Important Compatibility and Safety Notes
Compatibility and mixing
Use in an NST Cal Hypo feeder, NST Floater, or directly in the skimmer as directed on the product label. An automatic feeder must be designed for Cal Hypo tablets. Do not use this product in a feeder or skimmer in which another chlorinating compound is being used, and never mix Cal Hypo with Trichlor, Dichlor, or other pool chemicals. It is commonly used with chlorine pools, salt chlorine generators, ozone, and mineral systems; follow the container label. Compatibility with biguanide/PHMB pools and specific pool surfaces is not specified.
Safety First
This product is a strong oxidizing agent. Never mix it with Trichlor, Dichlor, or other pool chemicals, and do not use it in a feeder or skimmer containing another chlorinating compound. Keep the product dry; use clean, dry utensils, and do not allow moisture, organic matter, or other chemicals to contaminate it. The label advises avoiding breathing dust or fumes, avoiding contact with eyes, skin, and clothing, wearing protective eyewear and rubber gloves, and handling it in a well-ventilated area. Keep the container tightly closed when not in use, store it in a cool, dry, well-ventilated area away from heat and open flame, and keep it out of reach of children and pets. Read and follow all label directions and precautions.
Why Choose Poolife NST Prime?
Poolife NST Prime is a slow-dissolving Cal Hypo chlorine tablet for pool owners who want sanitation without added CYA. Its label describes up to 7 days of continuous sanitation, while noting that dissolution varies with pool conditions. Choose a listed NST delivery method, test the water regularly, and follow the container label for use and safety.
Ideal For
- Pool owners seeking chlorine sanitation without added CYA
- People looking for slow-dissolving Cal Hypo tablets
- Pool owners using an NST Cal Hypo feeder or NST Floater
- Pool owners considering direct skimmer application as directed on the label
- Pool owners who monitor free available chlorine and adjust the feed rate based on test results
Pairs well with Poolife NST Skimstack tablet holder and Poolife NST Chlorine Floater. Shop more Poolife pool care and pool chlorine at HotTubPirate.com.
Frequently Asked Questions
What are Poolife NST Prime Cal Hypo Chlorine Tablets?
Poolife NST Prime is a slow-dissolving calcium hypochlorite tablet sanitizer for swimming pools that sanitizes without adding CYA.
How much Poolife NST Prime do I add per 10,000 gallons?
Follow the container label and feeder directions, and test the water frequently to maintain 1–4 ppm free available chlorine.
How long do Poolife NST Prime tablets last in a pool?
The product label describes continuous sanitation for 7 days, but dissolution varies with bather load, water flow, pump run time, and other conditions.
Do Poolife NST Prime tablets add CYA?
No. NST Prime uses calcium hypochlorite and sanitizes without adding cyanuric acid.
Can I use NST Prime in a saltwater pool, ozone system, or mineral system?
It is commonly used with salt chlorine generators, ozone, and mineral systems. Follow your container label and monitor pool water closely.
Can I use Poolife NST Prime in any chlorine feeder or skimmer?
No. Use an automatic feeder designed for Cal Hypo tablets, or another application method listed on the container label. Do not use the tablets in a feeder or skimmer where another chlorinating compound is being used.
When can I swim after adding NST Prime tablets?
The product label says not to enter the pool until free available chlorine is 1–4 ppm. Test the water and follow the complete container-label directions.
How are NST Prime tablets different from trichlor tablets?
NST Prime is a Cal Hypo product that sanitizes without adding CYA; trichlor tablets are stabilized chlorine and add CYA.
What should I do if the tablets dissolve faster or slower than expected?
Check the pool’s free available chlorine and follow the feeder manual and container label to adjust the feed rate. The label says dissolution varies with bather load, water flow, pump run time, and other conditions.
How does NST Prime fit into Poolife’s NST three-step system?
Poolife identifies NST Prime as part of its three-step pool-care program, alongside NST Purify Oxidizer and NST Patrol Algaecide. Follow each product’s container label when using the products.
Which Poolife NST Prime size is SKU 22425?
SKU 22425 is the 20.2 lb package.