Aquarium Sponge Filter Pads for SunSun 304AB 404AB 704AB – 2/4 Pack

Crystal-Clear Water Starts with the Right Filter Pad

Keep your fish tank clean and your aquatic friends thriving with these premium replacement sponge filter pads. Designed specifically for SunSun / Grech 304AB, 404AB, and 704AB canister filtration units, these blue and white foam pads deliver superior mechanical filtration — trapping debris, waste particles, and fine sediment before they can cloud your water.

Why Choose These Filter Pads?

• Precise Compatibility: Engineered exclusively for SunSun/Grech 304AB, 404AB, and 704AB canister filters for a perfect, snug fit every time.
• Dual-Layer Filtration: Available in blue and white foam cotton — each density targets different particle sizes for thorough mechanical filtration.
• Odor Reduction: By capturing organic waste efficiently, these pads help minimize unpleasant tank odors and maintain a fresher aquatic environment.
• Reusable & Washable: Simply rinse and re-install — suitable for multiple uses after proper cleaning, saving you money over time.
• Pack Flexibility: Available in 2-piece or 4-piece packs so you always have a spare on hand for routine maintenance.
• Quality Foam Material: Made from durable foam cotton that maintains its shape and filtering efficiency wash after wash.

Product Specifications

• Compatible Models: SunSun / Grech 304AB, 404AB, 704AB canister filters
• Material: Foam cotton (sponge)
• Available Colors: White, Blue
• Dimensions: 22 × 21 cm (approx.)
• Pack Size: 2 or 4 pieces
• Country of Origin: Made in China

Note: Manual measurement may result in a 2–3% size variance; all dimensions are for reference only. Due to monitor differences, actual colors may vary slightly from product images.

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Frequently Asked Questions

Q: Which canister filter models are these aquarium sponge filter pads compatible with?

A: These replacement sponge filter pads are designed specifically for SunSun and Grech 304AB, 404AB, and 704AB canister filtration units. They are engineered for a precise fit within these models and may not be compatible with other canister filter brands or model numbers.

Q: Can I reuse and wash these aquarium filter pads?

A: Yes! These foam cotton filter pads are reusable and can be rinsed and reinstalled multiple times. For best results, rinse the pads in aquarium water (not tap water) during your regular tank maintenance to preserve beneficial bacteria and maintain filtering efficiency.

Q: What is the difference between the blue and white sponge pads?

A: The blue and white pads typically represent different foam densities. The blue pad generally provides coarser pre-filtration to capture larger debris and waste particles, while the white pad offers finer filtration to polish the water. Using both together in sequence maximizes mechanical filtration performance.

Q: How often should I replace the aquarium sponge filter pads?

A: With regular cleaning, these pads can last several months. However, if you notice the foam becoming permanently discolored, deteriorating in texture, or no longer effectively trapping particles even after cleaning, it is time to replace them. Keeping spare packs on hand ensures uninterrupted filtration for your fish tank.

Production & Packaging Notice

To 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.