Top 10 Best mineral cartridge for hot tub in 2026

Last Updated - 7/1/2026

🏆Best Choice

POOLPURE

POOLPURE PLFPRB25-IN Hot Tub Filter Replace Unicel C-4326, Guardian 413-106, Filbur FC-2375, FC-2370, 3005845, 17-2327, 100586, 33521, 25392, 817-2500, 5X13 Drop in Spa Filter 2 Pack

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•SPECIFICATIONS: Length: 13 5/16”; Outside Diameter: 5”; Top Hole: 2 1/8” Open; Bottom Hole: 2 1/8” Open; Filtration Area: 25 Sq.ft; Filter Material: Trilobal Filtration Fabric.
•COMPATIBLE MODELS: PLFPRB25-IN Pool Filter is compatible with PRB25-IN, Unicel C-4326, Filbur FC-2375, FC-2370, SD-00196, 303909, M-4326, 8172500, R173429. ★NOTE: This is a compatible replacement. Original manufacturers' names and part numbers are for reference only. POOLPURE stands as an independent brand.
•NSF/ANSI 50 CERTIFIED: POOLPURE Pool and Spa filter has been rigorously tested and certified by IAPMO against NSF/ANSI 50, ensuring safe material usage. With a precision of 50 microns, our filter effectively removes hair, leaves, dust, sediment, sand, and other fine particles.
•POWERFUL FILTRATION CAPACITY: Our unique trilobal filtration fabric offers an enhanced surface area, optimizing back pressure throughout your filtration system. This ensures consistently clean, fresh, and clear water for your pool or spa.
•EASY MAINTENANCE: The uniform and high-performing trilobal fabric ensures effortless stain capture and release, simplifying the cleaning process. For optimal performance, it's recommended to clean the cartridges monthly, depending on usage.

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$42.99

$52.99

-19%

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Tillbrook

Hot Tub Filter Cleaner - 6 Month Supply - 4 to 8 Uses - 32 oz Spa Filter Cartridge Cleaner - Hot Tub & Pool Filter Cleaner Soaking Solution - No Residue or Foam - Restores Filter - Safe & Non-Toxic

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•EXCEPTIONAL RESULTS: Introducing Tillbrook Hot Tub & Spa Filter Cleaner—the best choice for removing dirt, grease, hard water buildup, oils, sunscreen, and residue in spa filters. It’s essential to clean hot tub filters at least once a month to ensure proper functioning of your hot tub equipment and to maintain clean water.
•6 MONTH SUPPLY: Our concentrated formula is easy to use and provides remarkable value with 4-8 cleanings per bottle depending on filter size and grime level.
•SCIENTIFICALLY ENGINEERED: Our advanced cleaning solution is carefully crafted with powerful, all-natural ingredients that removes dirt, grease, and other unwanted buildup, ensuring longevity and optimal performance without damaging your equipment or contaminating your hot tub water.
•UNIVERSAL COMPATIBILITY: Our hot tub filter cleaner can be used with cartridge, sand, and DE filters, as well as pool filters.
•STRESS-FREE MAINTENANCE: No one wants dirty water or a broken hot tub pump – keep a clean and well-functioning spa by deep cleaning your hot tub filter every month, and consider light, spray cleanings each week and between guests.
•DEEP CLEAN SOAK: Spray filter with water to remove initial layer of buildup. Then mix ½ cup (4 oz) of concentrate per gallon of water. Mix enough solution to submerge hot tub filter. Leave for 2 hours, then rinse vigorously until solution is fully removed from filter. Soak overnight for especially dirty filters.
•INSTANT SPRAY CLEAN: Mix ½ cup of concentrate with water in a 32 oz spray bottle, and use this as a quick, weekly maintenance option for reviving your hot tub filter. Simply spray filter with water, then spray with solution and wait 5-15 minutes, then rinse filter thoroughly with water.
•MADE IN THE USA: Tillbrook embodies true American craftsmanship. Proudly manufactured in the USA, we uphold the highest ethical and environmental standards in every product we create.

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$18.99

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MAV AquaDoc

AquaDoc Spa & Hot Tub Filter Cleaner Soak - 64oz - Pool Filter Cleaner & Cartridge Cleaning Solution - Made in USA

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•Hot Tub Filter Cleaner: Soak your filter in AquaDoc spa filter cleaning solution to increase the efficiency and lifespan of your spa and hot tub filter. Our product is specifically designed to be a filter cleaner for hot tubs and spas.
•Fast Acting, Easy To Use Spa Filter Cleaner: We specialize in ensuring your hot tub cartridge filter cleaner is easy to use. Simply soak your filter in our hot tub cleaning solution for 60 minutes and put the clean filter back into its compartment in your spa, hot tub, or pool. No need to soak overnight.
•Cleans Sand, Cartridge, and DE Filters: When you choose an AquaDoc filter cleaner, you're making the right spa choice. Our filter cleaner for hot tubs is specially designed to clean Cartridge Filters, Sand Filters, and Diatomaceous Earth filters.
•Professional Grade, Made in the USA: We provide a professional-grade hot tub and pool cartridge cleaner solution for use in both commercial and home spas, hot tubs, and pools. Proudly made in the USA with high-quality materials you can trust.
•Enjoy Your Hot Tub Leisure Time: Filter Cleaner for Hot Tubs by AquaDoc allows you to enjoy your leisure time. Our spa filter degreaser is designed to remove the hassle associated with cleaning your hot tub, spa, or pool.

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$29.99

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ROYOR

ROYOR Spa Mineral Sticks for Hot Tub Supplies, Hot Tub Mineral Stick Inserts Filter Cartridge - 2 Pack

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•EXCELLENT LTRATION SYSTEM - The spa mineral filter stick multi-layer filtration makes water more healthy and can effectively filter out a variety of impurities, chlorineEco-friendly way to keep spa water in good quality and keep your tub clean
•EASY INSTALLATION& LOW MAINTENANCE - Easy to install and unaffected by heat,works with your existing flow rates Installation,just Simply drop the spa stick into your existing filter and let the hot tub sticks do their work. The maintenance cost is extremely low, helpful to save your time and cost.
•HIGH QUALITY MATERIAL & LESS SKIN IRRITATION - Our hot tub mineral stick is made of healthy and high-quality ABS materials. Drops directly into spa filter, keep fresh and clear water for a long time, bring you a natural and healthy spa. Reduces need for harsh chemicals; less skin irritation
•WIDELY APPLICABLE - The minimum required filter length for the spa hot tub filter mineral rod parts is about 6.5 inches, and the minimum filter hole diameter is 1-1/4 inches. Suitable for most spas and hot tubs, also compatible use for inflatable spa, jacuzzi, walk-in bathtub, outdoor swimming pools, baths, plunge pools and most easy-to-use standard bathtubs.
•Enjoy Natural and Healthy Water - Making hot tub water filtration more thoroughly, ensure your spa time comfier and cozier, provide best spa service you expect and more than that.

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$19.95

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ROYOR

ROYOR Hot Tub Silver Ion Cartridge - Spa Mineral Sticks for Hot Tub, Spa Silver Ion Cartridge for Spa Hot Tub, 2 Pack

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Superior Filtration System: The spa mineral filter stick multi-layer filtration makes water more healthy and can effectively filter out a variety of impurities, chlorine. A difference you can see, smell and feel, spa mineral cartridge improves water quality.
•Easy Installation& Low Maintenance: Easy to install and unaffected by heat,works with your existing flow rates Installation, just simply drop the spa stick into your existing filter and let the hot tub sticks do their work. The maintenance cost is extremely low, helpful to save your time and cost.
•Premium Quality Materials: Superior high efficiency filter materials specifically for durability and cleanability, reinforced mineral cartridge stick can be used with cool, warm and hot water spa tubs.
•Reduced Skin Irritation: The active ingredient of the silver ion cartridge is zinc. it helps reduces need for harsh chemicals; less skin irritation
•Enhanced Bather Comfort: Making hot tub water filtration more thoroughly, ensure your spa time comfier and cozier, provide best spa service you expect and more than that.

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$19.95

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Bilinavy

Bilinavy Spa in-Filter Mineral Sticks Parts for Hot Tub Filter Cartridge, Last for 4 Months, Yellow, 2PCS

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Natural Spa Experience: The nature spa mineral stick can automatically add trace minerals to the hot springs, reducing impurities in the hot springs to create clearer and cleaner water, making you feel as comfortable as you are in a pure natural hot spring!
•Extend Life: This silver nitrate stick can extend the life of the spa, keep the crystal clean, keep your spa sparkling clean and fragrant, and make the guest's spa experience unparalleled!
•Exist for High-cost Performance: This hot springs silver ion stick is based on a product that was born through market research and customer needs. It has a maintenance time of up to 4 months, and the maintenance cost is extremely low. It can be used in conjunction with your existing filter. Just put your hot tub stick in the filter. You can enjoy a carefree spa experience for 4 months!
•Easy to Install: This silver ion cartridge hot springs stick is equipped with a complete manual. The installation can be completed quickly according to the steps of the manual and is not affected by heat. It can be installed at the existing flow rate. Just put the hydrotherapy rod into the existing filter, and then Let the hot tub stick work
•Applicability: The minimum required filter length for the spa hot tub filter mineral rod parts is about 6.5 inches, and the minimum filter hole diameter is 1-1/4 inches; suitable for spas and hot tubs up to 500 gallons / 2000L

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$26.49

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Spa Depot

Spa Depot Power Soak Hot Tub & Pool Filter Cartridge Cleaner - 2 x 1 lb. Bottles

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Deep-Cleans pleated spa/pool filter cartridges
•Professional strength with enzymes
•2 x 1 lb. bottles
•Can't cause water foaming
•Economical to use

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$24.98

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FROG

FROG Filter Mate for Hot Tubs - Prefilled Sanitizing Mineral Dispenser Stick - Easy Installation into Filters for Easy Hot Tub Treatment & Water Maintenance

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Mineral Sanitizer for Hot Tub: FROG Filter Mate adds fresh minerals to your hot tub, keeping your hot tub water soft, clean and crystal clear
•Reduce chlorine or bromine use: With Sanitizing Minerals you can lower your chlorine or bromine use up to 50%* while maintaining effective sanitation
•Easy Filter Stick Installation: Insert the prefilled mineral stick into most hot tub filters with no assembly or guesswork required and enjoy up to four months of reliable sanitization
•Convenient Mineral Sanitizer: FROG Filter Mate's mineral sanitizer helps clean and soften hot tub water, killing bacteria and eliminating organic contaminants with minerals and a low level of chlorine or bromine
•Water Care Expertise: FROG has more than 25 years of experience making water care easier & keeping pool, hot tub and swim spa water sanitized; FROG’s patented Mineral Technology and prefilled cartridges create cleaner, clearer, softer water

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$39.95

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Hot Spring

Hot Spring Spas Tri-X Ceramic Cartridge Filter Single 73250, white

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•ceramic fiber cartridge filter

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$75.99

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POOLPURE

POOLPURE PRB25SF Spa Filter Replaces Unicel C-4405, Filbur FC-2387, PRB25SF-PAIR, Marquis 20342, R172464, APCC7062, CMP 25392-000-100, 17-2464, 817-5010 Hot Tub Filter 2 Pack

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•➤SPECIFICATIONS: Length: 6 5/8"; Outer Dimension: 5"; Top: 2 1/8"open; Bottom: 2 1/8" open; Filtration Area: 50 sq. ft; Filter Material: Trilobal Filtration Fabric.
•➤COMPATIBLE MODELS: PLFPRB25SF-PAIR Pool Filter is compatible with PRB25SF PAIR, Unicel C-4405, Filbur FC-2387, Marquis 20342, R172464, APCC7062, CMP 25392-000-100, 17-2464.★NOTE: This is a compatible replacement. Original manufacturers' names and part numbers are for reference only. POOLPURE stands as an independent brand.
•➤NSF/ANSI 50 CERTIFIED: POOLPURE Pool and Spa filter has been rigorously tested and certified by IAPMO against NSF/ANSI 50, meet rigorous safety and material integrity standards. The certification guarantees that all materials are safe for spa water and will not degrade, protecting both your health and your spa's pump.
•➤POWERFUL FILTRATION CAPACITY: Our unique trilobal filtration fabric offers an enhanced surface area, optimizing back pressure throughout your filtration system.With 50-micron precision filtration, it effectively captures hair, leaves, dust, sediment, and sand. This ensures consistently clean, fresh, and clear water for your pool or spa.
•➤EASY MAINTENANCE: The uniform and high-performing trilobal fabric ensures effortless stain capture and release, simplifying the cleaning process. For optimal performance, it's recommended to clean the cartridges monthly, depending on usage.⚠️ Not for Backwashing – This filter cartridge is not designed for backwashing. Backwashing may cause cracks or permanent damage.

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$42.99

$45.99

-7%

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