{"product_id":"aqualtra-hot-tub-filter-pwk65-65-sq-ft-drop-in-8-x-10-in-2-pack-washable-pet-media","title":"AQUALTRA Hot Tub Filter PWK65 65 sq.ft. Drop-in 8½ x 10½ in – 2-Pack, Washable PET Media","description":"\u003cp\u003e\u003cstrong\u003eThe AQUALTRA PWK65 hot tub filter is a high‑capacity, NSF‑certified replacement cartridge (65 sq.ft., 8½\" x 10½\" drop‑in) designed to fit C‑8465, Watkins 31114, FC‑3960 and similar spa housings — sold as a convenient 2‑pack.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eKeep your spa water clear and your circulation system protected with replacement cartridges engineered for durability and efficient contaminant capture. These AQUALTRA filters combine a chlorine‑resistant end cap, a sturdy polypropylene core, and PET composite media to trap hair, debris and fine sediment while remaining washable and reusable. The set includes two identical cartridges so you have a spare on hand when it’s time to swap and clean.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this filter improve water clarity and pump longevity?\u003c\/h3\u003e\n\u003cp\u003eThe PWK65 uses a multi‑layer PET composite media with enhanced dirt‑locking performance that captures micro particles and visible debris before they reach your circulation pump and heater. By removing solids effectively, it reduces strain on equipment and helps maintain consistent water flow through the spa.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e65 sq.ft. filtration area for higher contaminant capacity\u003c\/li\u003e\n  \u003cli\u003eFine pleated media traps sand, dust, hair and leaves\u003c\/li\u003e\n  \u003cli\u003ePolypropylene core preserves structural integrity under pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this cartridge fit my spa model and how do I confirm compatibility?\u003c\/h3\u003e\n\u003cp\u003eThis AQUALTRA cartridge matches standard PWK65 dimensions (8½\" outer diameter, 10½\" length, 3\" top and bottom opening) and is compatible with common OEM numbers like C‑8465, Watkins 31114, FC‑3960, 71827 and 71828. Always compare measurements or your existing part number before buying to ensure a correct drop‑in fit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeasure outer diameter and length to match 8½\" x 10½\"\u003c\/li\u003e\n  \u003cli\u003eCheck top\/bottom opening size (3\") against your spa housing\u003c\/li\u003e\n  \u003cli\u003eUse OEM part numbers for cross‑reference compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I clean and maintain these washable cartridges?\u003c\/h3\u003e\n\u003cp\u003eThese filters are designed for repeated rinsing and periodic deep cleaning to extend life and preserve filtration performance. Remove the cartridge before cleaning to prevent corrosion to spa components, rinse with a hose, and occasionally use a filter cleaner for a deeper regeneration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRinse every 1–2 weeks or more often with heavy use\u003c\/li\u003e\n  \u003cli\u003eSoak with a recommended filter cleaner monthly for buildup removal\u003c\/li\u003e\n  \u003cli\u003eDry fully before reinstalling or storing spares\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and certifications back the filter’s safety?\u003c\/h3\u003e\n\u003cp\u003eThe PWK65 is built with BPA‑free materials: a PET composite media, polypropylene core and a chlorine‑resistant end cap. AQUALTRA sources components certified against NSF\/ANSI standards for peace of mind when used in recreational water systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNSF\/ANSI‑certified materials for safety and durability\u003c\/li\u003e\n  \u003cli\u003eBPA‑free components that resist chlorine degradation\u003c\/li\u003e\n  \u003cli\u003eRobust end cap and core designed for repeated handling\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The AQUALTRA PWK65 2‑pack is aimed at hot tub and spa owners who want a reliable, washable replacement cartridge that matches popular OEM part numbers and offers higher dirt capacity. It’s a practical choice for homeowners, rental operators and maintenance professionals who prefer keeping a spare filter on hand and who want to reduce equipment wear without replacing cartridges monthly. Before purchasing, verify your spa’s cartridge dimensions or OEM part number to ensure correct fit.\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: How often should I clean the PWK65 filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Rinse every 1–2 weeks and deep‑clean with a filter solution monthly or as needed for heavy use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this cartridge compatible with my Watkins 31114 filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — this AQUALTRA PWK65 matches Watkins 31114 dimensions and openings, but confirm measurements before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AQUALTRA","offers":[{"title":"Default Title","offer_id":56834155315540,"sku":"B0CRB26Y2F","price":111.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/aqualtra-pwk65-front-view.jpg?v=1787047619","url":"https:\/\/gardenluxe.co.uk\/products\/aqualtra-hot-tub-filter-pwk65-65-sq-ft-drop-in-8-x-10-in-2-pack-washable-pet-media","provider":"Gardenluxe Uk","version":"1.0","type":"link"}