{"product_id":"aquarium-pre-filter-sponges-hw-602-hw-603b-replacement-3-pack","title":"3-Pack Pre-Filter Sponges for HW-602 HW-603B Canister Filters","description":"\n\u003ch2\u003e3-Pack Replacement Pre-Filter Sponges for HW-602 \/ HW-603B External Canister Filters\u003c\/h2\u003e\n\u003cp\u003eKeep your aquarium's filtration system running at peak performance with these high-quality replacement pre-filter sponges. Designed as a direct fit for the HW-602 and HW-603B external canister filters, this 3-piece set ensures your tank water stays crystal clear by trapping debris before it reaches the main filter media — extending the life of your canister filter and reducing maintenance time.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e Designed specifically for HW-602 and HW-603B external aquarium canister filters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3-Piece Set:\u003c\/strong\u003e Includes 3 sponges (Blue, Yellow, and Black) for multi-stage mechanical filtration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Sponge Material:\u003c\/strong\u003e Made from durable, aquarium-safe sponge for effective debris capture and long-lasting use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Stage Filtration:\u003c\/strong\u003e Different pore densities work together to catch coarse and fine particles, keeping water cleaner for longer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Maintenance:\u003c\/strong\u003e Simply rinse and reuse, or swap out with a fresh sponge when needed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtects Main Media:\u003c\/strong\u003e Acts as a pre-filter barrier, reducing clogging of biological and chemical filter media\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand New \u0026amp; High Quality:\u003c\/strong\u003e Each sponge is manufactured to precise specifications for a secure, reliable fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Sponge\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColors:\u003c\/strong\u003e Blue \/ Yellow \/ Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 3 PCS per pack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e HW-602, HW-603B External Aquarium Canister Filters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e3 × Replacement Pre-Filter Sponges (1 Blue, 1 Yellow, 1 Black)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePlease Note\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePhotos may not reflect actual size — please refer to the description for sizing details.\u003c\/li\u003e\n  \u003cli\u003eAllow 5–10mm variance due to manual measurement.\u003c\/li\u003e\n  \u003cli\u003eActual color may vary slightly from images due to monitor display differences.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou Might Also Like\u003c\/h3\u003e\n\u003cp\u003eLooking for more home and wellness accessories? Check out these popular picks from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/792leds-510k-l7-large-red-light-therapy-led-panel-infrared-light-pad-human-pet-full-body-use-massage-relaxation-660nm-850nm\"\u003e792LEDs L7 Large Red Light Therapy LED Panel – Full Body \u0026amp; Pet Use\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/3d-sleep-mask-soft-breathable-light-blocking-eye-mask\"\u003e3D Sleep Mask – Soft Breathable Light-Blocking Eye Mask\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.fws.gov\/\" target=\"_blank\" rel=\"noopener\"\u003eU.S. Fish and Wildlife Service\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Which canister filter models are these replacement sponges compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: These pre-filter sponges are specifically designed to fit the HW-602 and HW-603B external aquarium canister filters. Please verify your filter model before purchasing to ensure compatibility.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How often should I replace or clean the pre-filter sponges?\u003c\/h4\u003e\n\u003cp\u003eA: It is recommended to rinse the sponges during your regular aquarium maintenance routine — typically every 2–4 weeks depending on your tank's bio-load. Replace the sponges when they show signs of deterioration or can no longer be effectively cleaned.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Why are there three different colored sponges in the pack?\u003c\/h4\u003e\n\u003cp\u003eA: The three sponges (blue, yellow, and black) may feature different pore densities, allowing for multi-stage mechanical filtration. Coarser sponges capture larger debris while finer ones trap smaller particles, working together to maximize water clarity and protect downstream filter media.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these sponges safe for freshwater and saltwater aquariums?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, these sponges are made from aquarium-safe sponge material suitable for use in both freshwater and saltwater tank setups with compatible HW-602\/HW-603B canister filters.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which canister filter models are these replacement sponges compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These pre-filter sponges are specifically designed to fit the HW-602 and HW-603B external aquarium canister filters. 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