{"product_id":"aquarium-filter-pads-sunsun-304ab-404ab-704ab-foam-sponge-2-4-pack","title":"Aquarium Filter Pads for SunSun 304AB 404AB 704AB | 2 \u0026 4 Pack","description":"\n\u003ch2\u003eKeep Your Aquarium Water Crystal Clear\u003c\/h2\u003e\n\u003cp\u003eUpgrade your canister filter with these high-density blue and white foam filter pads, custom-designed to fit \u003cstrong\u003eSunSun GRECH 304AB, 404AB, and 704AB canister filters\u003c\/strong\u003e. These dual-layer sponge pads work to capture large waste particles and debris, helping to maintain clean, healthy water in your fish tank with minimal effort.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose These Filter Pads?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Fit:\u003c\/strong\u003e Custom manufactured specifically for SunSun GRECH 304AB \/ 404AB \/ 704AB canister filter models — no trimming needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Density Foam:\u003c\/strong\u003e Dense sponge material traps large waste particles and organic debris efficiently for clearer water.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReusable \u0026amp; Long-Lasting:\u003c\/strong\u003e Simply rinse and reuse — no need to replace after every cleaning cycle, saving you money over time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Layer Design:\u003c\/strong\u003e Blue and white layers provide a two-stage mechanical filtration approach, capturing particles of different sizes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Pack Options:\u003c\/strong\u003e Available in 2-piece or 4-piece packs so you can keep spares on hand for quick maintenance swaps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-density foam cotton\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White \u0026amp; Blue\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 22 × 21 cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 2 pcs or 4 pcs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e SunSun GRECH 304AB, 404AB, 704AB canister filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Please allow 2–3% variance in dimensions due to manual measurement. Colors may appear slightly different on screen compared to the actual product.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/34-compartment-double-sided-hardware-storage-box-removable-dividers\"\u003e34-Compartment Double-Sided Hardware Storage Box \u0026amp; Dividers\u003c\/a\u003e — great for organizing spare filter media and aquarium accessories.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/2-pack-microfiber-golf-ball-cleaning-towels-snap-hook\"\u003e2-Pack Microfiber Cleaning Towels with Snap Hook\u003c\/a\u003e — handy microfiber towels for wiping down tanks and equipment during maintenance.\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 aquarium filter pads compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: These filter pads are custom-designed to fit SunSun GRECH 304AB, 404AB, and 704AB canister filters. They are not guaranteed to fit other models without trimming.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I reuse these aquarium sponge filter pads after cleaning?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! These high-density foam pads are fully reusable. Simply rinse them with aquarium water (not tap water, to preserve beneficial bacteria) during your regular maintenance routine and place them back in the filter.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the difference between the blue and white layers?\u003c\/h4\u003e\n\u003cp\u003eA: The dual-layer design uses different densities — the coarser layer captures larger debris and particles first, while the finer layer catches smaller waste, providing a two-stage mechanical filtration process for cleaner aquarium water.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How often should I clean or replace these filter pads?\u003c\/h4\u003e\n\u003cp\u003eA: This depends on your tank's bio-load, but most aquarists rinse their filter pads every 4–6 weeks. Replace the pads when they begin to deteriorate or can no longer be cleaned effectively. Having a 4-pack on hand means you always have a fresh pad ready to swap in.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which canister filter models are these aquarium filter pads compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These filter pads are custom-designed to fit SunSun GRECH 304AB, 404AB, and 704AB canister filters. They are not guaranteed to fit other models without trimming.\"}}, {\"@type\": \"Question\", \"name\": \"Can I reuse these aquarium sponge filter pads after cleaning?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! These high-density foam pads are fully reusable. 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