POOLPURE PLFPXST100 Pool Filter Cartridge - Powerful Replacement

In this review of the POOLPURE PLFPXST100 pool filter cartridge, the bottom line is straightforward: this is a practical, high-capacity replacement for owners who need a direct-fit cartridge that filters well and is simple to maintain. The reviewer found the NSF/ANSI 50 certification and the unique trilobal filtration fabric to be the single biggest reasons to consider this cartridge, since those features combine to deliver reliable contaminant capture and peace of mind for pools and spas where water clarity matters.

Key Features

• NSF/ANSI 50 certified: Independently tested quality gives assurance that the cartridge meets industry safety and performance standards for pools and spas.
• Generous filtration area: The 100 sq. ft filtration area and trilobal fabric provide increased surface area to trap more debris and reduce system back pressure.
• Exact-fit dimensions: With a length of 17 3/8 in and an outside diameter of 8 15/16 in, the cartridge is designed to replace popular OEM models without modification.
• Easy maintenance: The trilobal fabric captures and releases dirt readily, making monthly cleaning simple and extending the usable life with proper care.
• Durable construction: Customers report solid replacement value and a build that fits snugly in filter canisters, helping the cartridge perform consistently over time.

Who It's For

This cartridge is best for pool and spa owners who need a direct replacement for models such as PXST100, Unicel C-8311RA, or Harward CC-1000-E, and who value certified filtration and long-term cleanability. It suits people who perform regular maintenance and prefer a cartridge that can be cleaned and reused instead of replaced frequently.

It is less appropriate for owners who require a backwashable solution or those who need a different size or type of filter element; this cartridge is not designed for backwashing and doing so can damage the unit.

Pros & Cons

Pros

• NSF/ANSI 50 certification provides trusted performance and safety for pool water filtration.
• Trilobal fabric and 100 sq. ft area capture more contaminants while helping manage system back pressure.
• Easy to clean and maintain, which customers say extends usable life when cared for properly.

Cons

• Not designed for backwashing, so users of backwash systems must look for alternative filter types.
• Durability feedback is mixed; while many find it long-lasting, some users reported variability in life span under heavy use.

Specifications

Our Verdict

The POOLPURE PLFPXST100 is a practical, cost-effective replacement cartridge for compatible pool and spa systems, offering certified filtration and an easy-to-clean design that delivers good value for routine maintenance. Buy it if you need a direct-fit, NSF-certified cartridge and plan to clean it regularly; look elsewhere if your system requires backwashing or a different size.

Frequently Asked Questions

Is this cartridge compatible with my existing filter?
This cartridge lists compatibility with PXST100, PWWPC100, PWWCT100, Unicel C-8311RA and several similar models; verify the length and diameter match your old cartridge before ordering.

Can I backwash this filter?
No. This cartridge is not designed for backwashing and doing so may cause cracks or permanent damage.

How often should I clean the cartridge?
For best results clean the cartridge monthly as needed; with proper maintenance the manufacturer indicates the cartridge can last up to 12 years.