Poolife™ NST™ Prime Cal Hypo Feeder
Effortless, Crystal Clear Pool Water with No Chlorine Lock
- Designed for Cal Hypo Tablets: To deliver optimal results
- Easy-Load Cartridge: Holds up to 8 Cal Hypo tablets
- Pump Compatibility: With standard and variable speed pumps
- Water-Saving Design: Saves up to 300 gallons of water per week*
- Automatic Dosing: Hands-free chlorine delivery, consistent results
*Based on use of Cal Hypo tablets vs. Trichlor tablets (U&A 2022 data)

Poolife™ NST™ Prime Cal Hypo Feeder
- Enjoy crystal clear, sparkling water with less effort
Additional Information
How To Use Poolife™ NST™ Prime Cal Hypo Feeder
- Connect the feeder to your pool’s circulation system following the instructions
- Open the feeder and insert up to 8 Poolife™ NST™ Prime Cal Hypo Tablets into the removable cartridge
- Adjust the control valve to maintain a 1–4 ppm free available chlorine level
- Monitor and refill every 2–3 weeks, depending on pool size and usage
Dosage Instructions
- Maintain 1–4 ppm free available chlorine
- Test water regularly with Poolife™ test strips
- Adjust flow using the control valve based on pool conditions
- Refill cartridge with NST™ Prime Tablets as needed
Frequently Asked Questions
Q: What makes this feeder better than traditional chlorine feeders?
A: It’s specifically engineered for Cal Hypo tablets, avoiding the over-stabilization issues that occur with Trichlor tablets — preventing chlorine lock and reducing water waste.
Q: How often do I need to refill it?
A: Typically, every 2–3 weeks, depending on your pool’s size, swimmer load and environmental factors.
Q: Can I use Trichlor tablets in this feeder?
A: No. This feeder is designed exclusively for the unique octagon shape and chemistry of Poolife™ NST™ Prime Cal Hypo Tablets.
Q: Is this feeder compatible with my variable speed pump?
A: Yes! It works with both standard and variable speed circulation systems.
Q: What happens if I accidentally use a different type of chlorine tablet?
A: Using non-Cal Hypo tablets (like Trichlor) in this feeder can cause damage or dangerous chemical reactions. Always use only Poolife™ NST™ Prime Cal Hypo Tablets as directed.
Q: Do I need to turn off my pump to refill the feeder?
A: Yes. Always turn off your circulation system before opening or refilling the feeder to ensure safe handling and proper pressure regulation.
Q: Can I use this feeder in an above-ground pool?
A: Yes, the feeder is compatible with both in-ground and above-ground pools as long as the pool has a standard or variable speed circulation system.
Q: How do I know when to refill the feeder?
A: Check the tablet cartridge every 1–2 weeks during peak season. Refill as needed to maintain chlorine levels between 1–4 ppm, especially during high usage or warmer weather.
Benefits of Regular Use
Health & Safety
- Eliminates harmful bacteria and algae
- Safe to swim immediately after treatment
- No cyanuric acid buildup — prevents chlorine lock
Water Quality
- Delivers consistently clear, clean water
- Reduces need for frequent shock treatments
Efficiency
- Lowers water waste caused by stabilizer buildup
- Extends the life of your pool equipment
Feeder Specifications
- Tablet Compatibility: Poolife™ NST™ Prime Cal Hypo Tablets only
- Tablet Capacity: 8 octagon-shaped tablets per cartridge
- Compatible Pool Pumps: Standard and variable speed
- Water Savings: Up to 300 gallons saved per week
- Chlorination Duration: Up to 3 weeks of automatic dosing per fill
Storage and Safety Guidelines
- Store extra tablets in a cool, dry location in their original container
- Keep feeder out of direct sunlight when not in use
- Always use gloves when handling tablets or refilling
- Never mix different types of chlorine tablets
- Add chemicals to water — never water to chemicals