The Hayward StarClear series of cartridge filters are known for their durability, easy maintenance, and clear-water performance. Choosing the correct replacement cartridge ensures optimal water flow, efficient debris removal, and extended filter life. This guide covers every compatible cartridge—from the compact CX225RE to the high-capacity CX900RE—highlighting each model’s dimensions, filtration area in square feet, pool-size suitability, and service recommendations. Whether you maintain a small spa or a large backyard pool, matching the correct cartridge size and flow rate keeps your system running efficiently. Each cartridge below lists compatibility, media construction, lifespan, and replacement timing to help you make the right purchase with confidence.
CX1000RE for STARCLEAR C100
The CX1000RE measures approximately 8.5″ diameter × 17.5″ length with a filtration area of 25 sq. ft. Designed for compact and above-ground pools, it provides efficient flow in tight housings. Made from reinforced polyester pleats, it lasts 1–2 seasons with cleaning. Replace yearly or when flow decreases significantly.
CX1100RE for STARCLEAR C1100
The CX1100RE (8.9″ × 23.25″, 100 sq. ft.) fits the StarClear C1100 and suits small to medium pools. The fine pleated polyester media traps debris effectively for 1–3 seasons. Compatible OEM and third-party versions are available; replace when water clarity drops or pressure stays high after cleaning.
CX1200RE for STARCLEAR C1200
With a filtration area of 120 sq. ft. and dimensions of 8.9″ × 23.25″, the CX1200RE supports medium pools needing higher debris capacity. Made of strong polyester with reinforced cores, it maintains balanced flow for 2–3 seasons. Replace when the cartridge no longer rinses clean or flow weakens.
CX1250RE for STARCLEAR C1250
The CX1250RE measures roughly 8.9″ diameter × 25.5″ length, offering 125 sq. ft. of area. It’s ideal for medium residential pools and spas. High-quality pleated media ensures reliable filtration for 2–3 years under proper maintenance. Replace when pressure remains high after rinsing or pleats discolor permanently.
CX1520RE for STARCLEAR C1502
This 8.9″ × 28″ cartridge delivers 150 sq. ft. of filtration for medium to large pools. The CX1520RE handles heavy debris loads and offers steady pressure maintenance. Constructed from durable polyester, it typically lasts 2–4 seasons. Replace when water clarity fades or pleats begin to deform.
CX1750RE for STARCLEAR C1750
At 8.9″ × 32.75″ with 175 sq. ft. area, the CX1750RE suits medium-to-large residential pools. It maintains high flow rates and traps fine debris with industrial-grade polyester. Lifespan averages 2–3 seasons. Replace annually in heavy-use pools or when pressure readings stay elevated.
CX1900RE for STARCLEAR C1900
The CX1900RE (8.9″ × 35.75″, 190 sq. ft.) is made for large residential or light commercial pools. Its expanded pleating and sturdy core deliver efficient filtration over multiple seasons. Replace when cleaning fails to restore clear water or after visible media fraying appears.
CX2020RE for STARCLEAR C2002
Measuring about 8.9″ × 25.5″ and rated for 200 sq. ft., the CX2020RE fits large pools needing superior clarity. Its rigid core and dense pleats ensure reliable flow. Expected life is 2–4 seasons. Replace once flow drops or pleats lose form despite rinsing.
CX225RE for STARCLEAR C225
The CX225RE is a compact 4.2″ × 9.8″ cartridge offering 25 sq. ft. of filtration area. Ideal for spas and very small pools, it uses fine polyester pleats for light debris capture. Replace every season or when staining and flow issues occur.
CX250RE for STARCLEAR C250
With dimensions of 4.25″ × 11.8″ and an area of 25 sq. ft., the CX250RE handles small pools or standalone spa filters. The reinforced media withstands repeated rinsing for up to 2 years. Replace when pressure remains high or water appears cloudy post-cleaning.
CX410RE for STARCLEAR C400
The CX410RE measures 7″ × 13″ with 40 sq. ft. filtration area, ideal for small-to-medium pools. Durable polyester pleats deliver clear, steady flow and last about 2 seasons. Replace when pleats are discolored or water clarity diminishes.
CX500RE for STARCLEAR C500
Sized 7″ × 19.6″ with 50 sq. ft. surface area, the CX500RE is suitable for small pools or spas requiring moderate capacity. Its polyester media and sturdy end caps resist collapse. Replace yearly or sooner if water quality drops.
CX550RE for STARCLEAR C550
The CX550RE measures 7″ × 23.5″ and offers 55 sq. ft. filtration area for medium-sized pools. With high-grade pleated polyester, it captures fine particles while maintaining flow. Replace after 2 seasons or when pleats lose flexibility.
CX750RE for STARCLEAR C750
At 7″ × 29.6″ and 75 sq. ft., the CX750RE supports medium pools and provides long filtration cycles. Its heavy-duty media ensures long-term reliability. Replace every 2–3 years or when pressure fails to normalize post-cleaning.
CX760RE for STARCLEAR C760
The CX760RE is 7″ × 29.6″ with a 75 sq. ft. area, designed for mid-sized pools needing high efficiency. It offers strong flow and multi-season durability. Replace when pleats are damaged or filter pressure remains elevated after rinsing.
CX800RE for STARCLEAR C800
With dimensions of 8.9″ × 23.25″ and 90 sq. ft. of area, the CX800RE serves medium-to-large pools. The reinforced core and fine polyester pleats ensure high clarity over several seasons. Replace when water shows dullness or media integrity weakens.
CX850RE for STARCLEAR C850
The CX850RE measures 8.9″ × 25.5″ with 85 sq. ft. surface area, suitable for large residential pools. The pleated polyester and solid end caps deliver consistent flow. Replace after 2–3 years or when pressure issues persist after cleaning.
CX900RE for STARCLEAR C900
The CX900RE stands 8.9″ × 25.5″ and provides 90 sq. ft. of filtration—ideal for large pools with heavy bather loads. Built from reinforced polyester for strength and durability, it lasts multiple seasons. Replace when pleats deform or water clarity declines noticeably.
Maintaining the correct Hayward StarClear replacement cartridge ensures your filtration system operates efficiently, preserving water clarity and reducing strain on the pump. Always match the cartridge’s dimensions and square footage to your filter housing, and choose OEM or verified third-party models for best performance. With proper cleaning and annual inspections, these cartridges can deliver years of dependable pool filtration for every pool size and system type.