Poolife™ MPT Extra™ 3” Chlorinating Tablets: All In One Chlorine Tablets
Best 3-Inch Pool Chlorine Tablets for Crystal Clear Water
- Sanitizes Pool Water: Kills bacteria and microorganisms
- Prevents Algae Growth: Stops green, black and mustard algae
- Stain Prevention: Protects against metal staining
- Scale Prevention: Reduces calcium buildup on pool surfaces
- Water Softening: Improves water feel and quality

MPT Extra™
- One tablet — beautiful results
Additional Information
How To Use Pool Chlorine Tablets
Application Methods
- Automatic Pool Feeder: Add tablets to chlorinator for hands-free maintenance
- Floating Dispenser: Place tablets in pool floater for even distribution
- Skimmer Basket: Add directly to skimmer for circulation-based dosing
Dosage Instructions
- Maintain 1-4 ppm free chlorine level
- Test water regularly with pool test strips
- Add tablets as needed based on pool size and usage
Frequently Asked Questions
Q: How often should I add chlorine tablets?
A: Check and adjust weekly, adding tablets as needed to maintain 1-4 ppm free chlorine.
Q: Can I use these tablets in saltwater pools?
A: Yes, but monitor cyanuric acid levels as they can build up over time.
Q: What’s the shelf life of pool chlorine tablets?
A: When stored properly in a cool, dry place, tablets maintain effectiveness for 2-3 years.
Q: Can I break the tablets to fit smaller feeders or floaters?
A: No. Do not break or crush the tablets — this can release chlorine too quickly and may damage surfaces or equipment. Use a feeder or dispenser sized appropriately for 3-inch tablets.
Q: What’s the difference between these tablets and regular chlorine tablets?
A: Poolife™ MPT Extra™ tablets are multi-functional — they sanitize, prevent algae, clarify water and protect against stains and scale, eliminating the need for multiple separate products.
Q: Can I use these tablets during heavy swimmer load or heat waves?
A: Yes. Just be sure to test chlorine levels more frequently during high usage or hot weather, as chlorine may be consumed more quickly.
Q: Should I still shock my pool if I use these tablets?
A: Yes. While these tablets provide ongoing sanitization, weekly or bi-weekly shock treatments are still recommended to oxidize contaminants and maintain water clarity.
Benefits of Regular Pool Chlorination
Health & Safety
- Eliminates harmful bacteria and viruses
- Prevents waterborne illnesses
- Creates safe swimming environment for families
Water Quality
- Maintains crystal clear water appearance
- Prevents algae blooms and green water
Equipment Protection
- Prevents scaling on pool equipment
- Reduces staining on pool surfaces
- Extends life of pool filters and pumps
Pool Chemical Specifications
Active Ingredient: Trichlor (Trichloroisocyanuric Acid)
Available Chlorine: 93.5%
Available Sizes: 4 lbs., 11 lbs., 21 lbs.
Storage and Safety Information
- Store in original container in cool, dry location
- Keep away from direct sunlight and moisture
- Never mix with other pool chemicals
- Always add chemicals to water, never water to chemicals
- Use proper protective equipment when handling