Hayward CX225RE Replacement Cartridge – 25 sq ft

The Hayward CX225RE is a premium replacement filter cartridge designed for use in the Micro StarClear C225 cartridge filter. With 25 square feet of pleated media and reinforced construction, it helps maintain efficient filtration, longer run-cycles, and clear pool water.

Key Features

25 sq ft of filtration area for extended service between cleanings.
Made with reinforced polyester pleated media for durability and high flow capacity.
Standard size cartridge designed to drop into C225-series filters without modification.
Helps maintain original hydraulic performance and proper filter function.

Technical Specifications

Part Number: CX225RE
Filtration Area: 25 square feet
Compatible Filter Series: Micro StarClear C 225
Dimensions (Approx): 11-7/8″ length × 4-5/8″ diameter

Installation & Compatibility Notes

Before installing, turn off the pump and relieve all system pressure. Remove the filter tank lid, remove the old cartridge element, and clean the tank interior of debris. Insert the CX225RE cartridge ensuring it is seated properly, re-mount the lid and restore circulation. Monitor pressure after startup to confirm return to baseline.

Maintenance Tips

Track the clean-start pressure and note when pressure increases by 8-10 psi above baseline — at that point inspect/clean or replace the cartridge as needed.
Rinse the cartridge media during maintenance intervals to extend life and maintain flow.
Replace the cartridge when media is torn, collapsed, or when rinsing no longer restores proper pressure drop.

Why Choose This Cartridge?

The CX225RE is the factory replacement part for the Micro StarClear C 225 series filters. Using the correct element helps ensure optimal filtration performance, extended cycle times, and compatibility with the filter housing. A smart choice for service professionals and advanced pool owners who want reliable filter maintenance.

Questions about returns? View our return policy.

Hours Of Operation:

Monday - Friday: 7:00 am to 5:00 pm Phoenix Time

Saturday: 8:00 am to 2:00 pm

Sunday: Closed

We do not ship on Saturday or Sunday.
Orders totaling more than $300 will require signature confirmation upon delivery.
We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
Expedited shipping options are available at checkout.

Return Policy:

Products that are received damaged will receive a refund in store credit.
Most products are eligible for return within 30 days of receipt, except where noted below.
To initiate a return, please complete an RMA form prior to sending your item back.
Original shipping costs are non-refundable and will be deducted from the return credit.
Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
Some returns will be charged an automatic 15% restocking fee.
We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
Please complete the return form to receive your RMA number and return shipping label.
Chemical products are not eligible for return under any circumstances.
The Pentair Colorsync 618031 is not eligible for return.
Pool cleaners are not eligible for return.
Opened seals and o-rings are not eligible for return.
Capacitors are not eligible for return.
Plastic popup tools are not eligible for return.
Automation components and circuit boards are not eligible for return.
If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.