{"product_id":"poolzilla-spa-filter-cartridge-replacement-1-pack-for-watkins-unicel-65-sq-ft-pleated","title":"Poolzilla Spa Filter Cartridge Replacement — 1-Pack for Watkins\/Unicel, 65 sq ft Pleated","description":"\u003cp\u003e\u003cstrong\u003ePoolzilla replacement spa filter cartridge designed to fit Watkins 31114, Unicel C-8465, Filbur FC-3960 and several Caldera and Tiger River spa models for reliable, easy filtration.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your spa pump is running but the water looks dull, a tired or undersized cartridge could be the cause. This Poolzilla 1-pack replacement cartridge matches common OEM dimensions and pleat area so it swaps in without plumbing changes. It’s built to capture typical spa debris while keeping flow strong, and cleaning is straightforward: rinse, reinstall, repeat. The product is an independent Poolzilla design made to be a practical, cost-effective spare part for many popular spa brands.\u003c\/p\u003e\n\n\u003ch3\u003eWhich spa models will this cartridge work with?\u003c\/h3\u003e\n\u003cp\u003eThis cartridge is manufactured to be compatible with a number of widely used spa filter part numbers and model families. It mirrors the size and port spacing of multiple OEM filters so it installs in place of those originals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible references: Watkins 31114, Unicel C-8465, Filbur FC-3960\u003c\/li\u003e\n  \u003cli\u003eAlso fits: Pleatco PWK65, part numbers 71827 and 71828\u003c\/li\u003e\n  \u003cli\u003eSuitable for Tiger River Caspian, Bengal, Sumatran, and Caldera 76136 models\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this cartridge improve spa water clarity?\u003c\/h3\u003e\n\u003cp\u003eThe cartridge uses a multi-pleat fabric that increases surface area to trap solids without choking off flow. More pleats equal more contact area, which captures hair, leaves, sediment and other common spa contaminants.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e65 square feet of filtration material for higher contaminant-holding capacity\u003c\/li\u003e\n  \u003cli\u003ePleated construction maintains good flow even as debris accumulates\u003c\/li\u003e\n  \u003cli\u003eEasy to rinse clean—periodic hosing extends usable life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the physical dimensions and installation notes?\u003c\/h3\u003e\n\u003cp\u003eKnowing the cartridge dimensions helps confirm fit before purchase. This Poolzilla unit matches the common replacement size used by the referenced part numbers and installs the same way as the original cartridge.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLength: 10.5 inches; outer diameter: 8.5 inches; inner diameter: 3 inches\u003c\/li\u003e\n  \u003cli\u003eFiltration area: approximately 65 sq. ft., matching many OEM replacements\u003c\/li\u003e\n  \u003cli\u003eInstall by removing the old cartridge, rinsing the housing, and seating the new filter as directed by your spa manufacturer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat kind of maintenance and lifespan can I expect?\u003c\/h3\u003e\n\u003cp\u003ePerformance declines as debris builds up, but regular rinsing and occasional deep cleaning keep the cartridge effective. Proper care extends service life and preserves pump efficiency.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRoutine rinse with a garden hose after each few uses to remove loose debris\u003c\/li\u003e\n  \u003cli\u003eDeep clean with a filter-cleaning solution every 3 months or as needed\u003c\/li\u003e\n  \u003cli\u003eTypical service life: roughly 1–2 years depending on usage and water conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Spa owners who need a dependable, drop-in replacement for common OEM cartridges across Watkins, Unicel, Filbur, Pleatco, Tiger River and Caldera systems. It’s suited for DIY maintenance, pool-service professionals stocking spare parts, and anyone seeking a balance of filtration area and easy upkeep without changing existing plumbing or filter housings.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this an OEM filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No, this is a Poolzilla compatible replacement designed to match OEM dimensions and fit common spa models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I replace the cartridge?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: With routine rinsing and quarterly deep cleans expect about 1–2 years of service, depending on water use and condition.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Poolzilla","offers":[{"title":"Default Title","offer_id":56832679117140,"sku":"B096GWBLT2","price":75.43,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/poolzilla-spa-filter-front-view.jpg?v=1787032641","url":"https:\/\/gardenluxe.co.uk\/products\/poolzilla-spa-filter-cartridge-replacement-1-pack-for-watkins-unicel-65-sq-ft-pleated","provider":"Gardenluxe Uk","version":"1.0","type":"link"}