Replacement Cartridges We offer all of the popular filter replacement cartridges for pool and spa filters. Our pool and spa cartridges are made with 100% Reemay, a spunbonded polyester filtration media that was made specifically for durability and antimicrobial protection. All our replacement cartridges are compatible for your systems. Pool and spa cartridges should be replaced every 1-2 years. Signs that you need to replace your cartridge are a high PSI, cracked end caps, flattening of pleats, frayed fabric or reduction of water flow.
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