OLYCRAFT 12Pcs Filter Foam Pad Compatible with U3 Aquarium Filters Sponge White Filter Media Bio Foam Filters Underwater Sponge Replacement for Aquarium Fish Tank Water Filtration

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• What You'll Receive--You’ll receive 12pcs filter foam pads—enough to reduce the frequency of reorders and ensure you always have a white aquarium filter pad available for regular replacement. The rectangular foam pads are easy to handle and install
• U3 Replacement--This filter foam pad is a direct replacement for the U3 submersible sponge filter. Its precise dimensions (approximately 196–197 mm/7.72-7.76 inch long, 59–60 mm/2.32-2.36 inch wide, and 10–11 mm/0.39-0.43 inch thick) ensure a nice fit. It maintains optimal water flow and performance in your aquarium without any gaps
• Aquarium Filtration--The aquarium filter sponge provides effective mechanical filtration by trapping debris, uneaten food, fine sediment, and floating impurities. Its porous structure also supports biological filtration by harboring beneficial, which is essential for a healthy aquarium environment in both freshwater and saltwater tanks
• Durable Filter Media--This sponge pad is made of breathable, porous white foam that retains its shape and filtration efficiency over time. It is a long-lasting alternative to sponge filters, protecting your U3 unit by handling the primary filtration load
• Maintenance-Friendly Design--The white color makes it easy to visually monitor debris buildup, indicating when cleaning is needed. Its design allows for quick removal and installation, simplifying filter maintenance for any aquarium enthusiast using foam filters