Crystal-clear pool water starts with the right cartridge doing the heavy lifting in your filter housing. The wrong size or media weight means cloudy water, high pressure, and cartridges that collapse mid-season. The eight picks below cover the most common inground pool filter housings, from Pentair Clean & Clear Plus systems to Hayward, Jandy, and Waterway setups, so you can match the right cartridge to your existing equipment without guesswork.
The Choices Worth Comparing
Future Way CCP320 Pool Filter Cartridges for Clean & Clear Plus 320 (4 Pack)
Unicel C-8411 Replacement Filter Cartridge 75 sq ft
POOLPURE PRB25-IN Hot Tub Filter (2 Pack)
Swimara Ultra Series Jandy CS200 Cartridge 200 sq ft
Future Way CCP420 Pool Filter Cartridges for Clean & Clear Plus 420 (4 Pack)
Future Way CCP520 Pool Filter Cartridges for Clean & Clear Plus 520 (4 Pack)
Wowreed Pool Filter for SwimClear C100S, 100 sq ft
Swimara Pro Series Jandy CS200 Cartridge 200 sq ft
The Details Behind The Selections
Pool owners running a Pentair Clean & Clear Plus 320 housing know how quickly a single cartridge wears down mid-summer, which is why this 4-pack from Future Way earns the top slot. Each cartridge covers 80 square feet of media, totaling 320 square feet of cleanable surface that should keep most inground pools running clear for an entire season before a replacement set is even needed.
Compared to the Unicel C-8411 further down, this set targets Pentair’s Clean & Clear Plus line specifically and ships ready to drop into the existing housing without modification. The Trilobal filtration fabric is the same general media type used across higher-end options, and the NSF/ANSI 50 certification on the materials gives some extra confidence about what’s touching your water.
Notable Upsides
- Four cartridges per pack means roughly a year of rotation for a single-housing owner.
- NSF/ANSI 50 certified materials for the fabric and end caps.
- Direct fit for Pentair Clean & Clear Plus 320, 160340, and 178580 models.
- Trilobal fabric captures fine sediment that basic spun-bond media misses.
- Compatible footprint with Pleatco PCC80, Unicel C-7470, and Filbur FC-1976 cross-references.
Points To Keep In Mind
- Cartridges require rinsing every few weeks during heavy use to keep pressure in check.
- Bulk packaging takes up garage space until you cycle through the set.
Key Product Details
Who Should Grab It
Anyone running a Pentair Clean & Clear Plus 320 housing who wants a multi-season supply on hand without reordering mid-summer.
Look Elsewhere When
Your system is a Hayward CX760RE or Sta-Rite PXC-75, where the Unicel C-8411 is the closer fit.
Unicel has built a reputation in the pool industry for making replacement cartridges that match OEM (Original Equipment Manufacturer) dimensions closely, and the C-8411 is a strong example of that approach. It covers 75 square feet of media and fits multiple housings, including Hayward CX760RE, Sta-Rite PXC-75, and Waterway Pro Clean 75 systems, which makes it useful for households running one of those setups.
Unlike the Future Way CCP320, which is sold as a multi-pack aimed at a single Pentair housing, this Unicel arrives as a single replacement cartridge with molded gaskets on both end caps. The 8-15/16-inch outer diameter and 17-3/8-inch length are the key dimensions to check against your existing cartridge before ordering.
The Value In It
- Cross-compatible with Hayward, Sta-Rite, and Waterway housings from a single SKU.
- Molded gaskets on both end caps help prevent bypass leaks.
- 4-inch open end caps match standard plumbing adapters.
- Compact 75 sq ft size suits smaller filter housings without forcing extra backpressure.
Trade-Offs
- Single-cartridge purchase means more frequent reorders than a 4-pack supply.
- Dimensions must be measured against your existing cartridge since the fit list is broad.
Made For
Owners of Hayward CX760RE, Sta-Rite PXC-75, or Waterway Pro Clean 75 filter housings who want a single trusted replacement.
Swap It Out When
You need a larger media area, where the Future Way CCP320 (320 sq ft) or the Swimara CS200 (200 sq ft) handles more debris between rinses.
Spas and small filter housings often get overlooked in cartridge roundups, but POOLPURE targets that exact niche with the PRB25-IN. The 25 square feet of media is compact, but the 13-5/16-inch length and 5-inch outer diameter fit a range of hot tub and small filter systems, including those that take the Unicel C-4326 cross-reference.
While the larger picks in this list like the Future Way CCP520 handle inground pool volume, the POOLPURE is built for tighter housings where a full-size cartridge simply will not fit. The Trilobal fabric construction matches the media type found on bigger pool cartridges, so the filtration quality should feel familiar even in a smaller package.
What Works In Its Favor
- Two-pack format means a hot tub owner always has a clean spare ready.
- Trilobal fabric delivers finer filtration than generic spun-bond replacements.
- Compact 5-inch diameter slips into tight hot tub filter housings.
Things To Consider
- 25 sq ft is small, so pressure rises faster in heavy-bather conditions.
- Designed for spas, not full inground pool volume.
Quick Facts
Right Fit For
Hot tub owners and small filter housing owners who need a 25 sq ft drop-in replacement.
Not Your Match When
You are filtering a full inground pool, where the Future Way CCP320 or CCP420 covers the volume much better.
Jandy CS200 owners dealing with heavy pollen counts, sandy soil, or tree litter need a cartridge that does not collapse under sustained load. The Swimara Ultra Series uses 5 oz/sq yd Trilobal media, which is the heavier fabric weight option in this roundup, paired with PU (polyurethane) end caps and a PP (polypropylene) core for structural rigidity.
Where the standard Pro Series below uses lighter media, the Ultra adds mass to handle elevated fine-debris conditions. The 8-15/16-inch outer diameter and 33-1/8-inch length match the Jandy CS200 footprint, and 4-inch open ends accept standard plumbing adapters.
Good Reasons To Consider
- 5 oz/sq yd media is heavier than the standard series, designed for sustained heavy use.
- Trilobal fibers target particles down to 10 microns.
- PU end caps and PP core resist deformation under pressure spikes.
- Pleat bands help maintain even pleat spacing for consistent flow.
Worth Bearing In Mind
- Heavier media means slower initial flow until water saturates the cartridge.
- Single-cartridge pack, so you will reorder more often than with a 4-pack supply.
Best Suited To
Jandy CS200 owners in pollen-heavy regions or near landscaping that drops fine debris into the pool.
Where A Sibling Pick Shines
The Swimara Pro Series Jandy CS200, which uses lighter 3 oz/sq yd media, suits pools with average debris loads at lower pressure.
Stepping up to the Pentair Clean & Clear Plus 420 means a longer 26-inch cartridge with 3-inch openings on both ends, and this Future Way 4-pack is built for that exact housing. Each cartridge provides 105 square feet of media, totaling 420 square feet across the set, which matches the housing’s rated capacity.
Compared to the CCP320 above, this set is physically longer and covers more total media, but the Trilobal fabric construction stays the same. The cross-compatibility list includes Pentair R173576, Pleatco PCC105, Unicel C-7471, and Filbur FC-1977, so you have several reference points when matching it to your existing setup.
What Makes Sense
- Four-pack supply covers the full 420 sq ft capacity in one purchase.
- 26-inch length and 7-inch outer diameter match the CCP420 housing directly.
- Trilobal fabric balances fine filtration with reasonable flow rate.
- Cross-references cover Pentair, Pleatco, Unicel, and Filbur part numbers.
Honest Caveats
- Larger cartridge footprint needs more clearance in your housing lid area.
- 4-pack pricing is higher up front, even if cost-per-cartridge is reasonable.
Whose Shelf It Belongs On
Pentair Clean & Clear Plus 420 owners who want a full replacement rotation ready before the season starts.
Consider Something Else When
Your housing is the 320 model, in which case the Future Way CCP320 4-pack fits better.
For larger Pentair systems running the Clean & Clear Plus 520, the media area jumps to 520 square feet, and this 4-pack from Future Way delivers that capacity in one shipment. Each cartridge brings 130 square feet of Trilobal filtration fabric, and the build is certified to NSF/ANSI 50 for material safety, the same standard the smaller CCP320 and CCP420 sets carry.
Compared to the 4-pack CCP420 directly above, this set is the next step up in total media area, which is helpful for higher-volume inground pools that push more water per hour through the filter. Cross-references include Pentair R173578, Pleatco PCC130, Unicel C-7472, and Filbur FC-1978.
Everyday Wins
- 520 sq ft total media handles high-volume pool circulation.
- NSF/ANSI 50 certified materials match the smaller Future Way sets.
- Trilobal fabric extends the time between rinses in busy pools.
- Multi-pack format reduces the need to reorder mid-season.
Points To Note
- Largest media area means cartridges take longer to dry after rinsing.
- Only fits the CCP520 housing, so verify your Pentair model before ordering.
Feature Snapshot
Perfect Match For
Owners of large Pentair Clean & Clear Plus 520 systems who want a full rotation supply upfront.
Reach For A Different Pick When
Your housing is the smaller Pentair 320, where the Future Way CCP320 4-pack is the right match.
Hayward SwimClear C100S owners have a narrower set of replacement options compared to Pentair Clean & Clear Plus owners, and the Wowreed cartridge targets that specific niche. The 100-square-foot media area sits between the compact Unicel C-8411 above and the larger Jandy CS200 options, making it a middle ground for moderate pool volume.
The 19-5/8-inch length and 10-5/16-inch outer diameter are larger than the Unicel C-8411, which makes sense given the SwimClear housing footprint. The 4-inch open end caps match standard plumbing adapters, and the cross-reference list covers CX100XRE, CS100E, C-9440, and PA100S part numbers.
Positive Takeaways
- 100 sq ft of media is a sensible size for mid-size SwimClear systems.
- Cross-compatible with CX100XRE, CS100E, C-9440, and PA100S.
- 4-inch open end caps accept standard adapters.
Factors To Consider
- Single-cartridge pack means more frequent reorders than a 4-pack supply.
- Dimensions must be confirmed before ordering since SwimClear housings vary across models.
The Right Fit
Hayward SwimClear C100S owners who want a direct-fit replacement without cross-brand guessing.
Not Your Match When
You need a Jandy CS200 cartridge, where the Swimara Ultra or Pro Series fits that housing instead.
Not every Jandy CS200 pool needs the heaviest media on the market, and the Swimara Pro Series sits between basic spun-bond cartridges and the heavier Ultra Series above. The 3 oz/sq yd Trilobal media targets particles down to 10 microns while keeping initial flow rate higher than denser media would allow.
The 8-15/16-inch outer diameter and 33-1/8-inch length match the Jandy CS200 housing, and the same PU end caps and PP core construction carry over from the Ultra Series. Where the two Swimara options differ is media weight: 3 oz/sq yd here versus 5 oz/sq yd in the Ultra, which is the main decision point between them.
Where It Delivers
- 3 oz/sq yd Trilobal media offers balanced flow and capture for average pools.
- Same 200 sq ft media area as the Ultra Series in this roundup.
- PU end caps and PP core match the heavier-duty sibling cartridge.
- Pleat bands keep the media open for steady water passage.
Soft Spots
- Lighter media may load faster in very heavy debris conditions than the Ultra Series.
- Single cartridge per purchase, so reordering happens more often.
Built With In Mind
Jandy CS200 owners with standard residential debris loads who prefer faster flow over maximum capture.
A Better Fit Elsewhere
For heavy pollen or fine-debris pools, the Swimara Ultra Series Jandy CS200 above is the stronger option.
Choosing The Right Cartridge For Your Filter Housing
Start with the housing model number printed on your filter tank, since the wrong dimensions will not seat properly. The Future Way sets target the Pentair Clean & Clear Plus line specifically, while the Unicel and Wowreed options cover Hayward, Sta-Rite, and Waterway housings, and the Swimara pair handles Jandy CS200 systems. Filter media area matters because larger sq ft ratings mean longer intervals between rinses, useful for busy pools or heavy pollen seasons.
Trilobal fabric, a three-lobed fiber construction that increases surface area and particle capture compared to basic spun-bond media, appears across most of these picks, and the weight of that fabric (measured in oz/sq yd) tells you how much debris the cartridge can hold before flow drops. The Swimara Ultra Series at 5 oz/sq yd is the heaviest here, while the Pro Series at 3 oz/sq yd and the Future Way sets use standard weights.
End cap dimensions and gasket design affect how well the cartridge seals inside the housing. Open end caps with molded gaskets reduce bypass leaks, which is why the Unicel C-8411 includes that detail. For multi-pack purchases, you can rotate cartridges through the season rather than waiting until the only one in service clogs and forces an emergency rinse.
Key Considerations Across These Picks
Wrong Turns To Avoid
Skipping a dimension check on your existing cartridge is the fastest way to buy the wrong replacement. The 8-15/16-inch outer diameter is shared across the Unicel C-8411, Swimara CS200 options, and several others, but length varies from 17-3/8 inches on the Unicel to 33-1/8 inches on the Jandy CS200 cartridges. A cartridge that is even half an inch too long will not seat inside the housing lid. Always measure your current cartridge before ordering, especially when cross-referencing part numbers across brands.
The Case For Spending Up
Higher-tier cartridges in this category, like the Swimara Ultra Series with 5 oz/sq yd media, cost more per cartridge but hold more debris before pressure rises. For inground pools in pollen-heavy regions or near trees that drop fine organic matter, that extra capacity translates to fewer rinses per season and longer cartridge life. In a quieter residential setting with a covered pool, a lighter 3 oz/sq yd media like the Swimara Pro Series handles the workload at lower cost.
Frequently Asked Questions
How often should cartridge pool filters for inground pools be rinsed? Most inground pool cartridges need rinsing every 2 to 4 weeks during the swim season, depending on bather load and debris. You will notice the pressure gauge on your filter rising 8 to 10 psi (pounds per square inch) above the clean baseline, which is the signal to rinse regardless of the calendar.
Can I use a generic replacement cartridge in my Pentair or Hayward housing? Yes, as long as the dimensions, end cap style, and media area match your housing’s rated capacity. The Future Way, Unicel, Wowreed, and Swimara options in this roundup are all compatible replacements for specific OEM models, but verifying the part number cross-reference before ordering prevents fit issues.
What is the difference between Trilobal fabric and regular spun-bond media? Trilobal fabric uses three-lobed fibers that expose more surface area to passing water, which improves fine-particle capture compared to basic round-fiber spun-bond media. Most higher-end pool cartridges use Trilobal construction, and the difference shows up in clearer water and longer intervals between rinses.
How long does a pool filter cartridge typically last? A well-maintained cartridge typically lasts 2 to 3 seasons before the media starts to break down and the cartridge no longer cleans effectively. Signs of wear include persistent cloudiness after rinsing, fabric that feels thin or frayed, and end caps that no longer seal tightly inside the housing.
Should I buy a 4-pack or single cartridges? A 4-pack makes sense for a single-housing owner who wants a full rotation ready, since you can swap, rinse, and dry cartridges without leaving the filter empty. Single cartridges work well for owners who want to try a brand first or who already have spares on hand from previous orders.
