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Available in multiple sizes and pore densities to suit any tank or pond filtration system.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiological Filtration Power\u003c\/strong\u003e — The porous foam structure provides an ideal surface area for nitrifying bacteria to colonize, naturally breaking down ammonia and nitrites for a healthier aquatic ecosystem.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDecomposes Waste Effectively\u003c\/strong\u003e — Helps break down fish waste and leftover food, reducing harmful buildup and keeping your water cleaner for longer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut-to-Fit Flexibility\u003c\/strong\u003e — Easily trimmed to any shape or size to fit virtually any filter housing, sump, or pond filtration system without waste.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater \u0026amp; Saltwater Compatible\u003c\/strong\u003e — Suitable for use in all aquarium types, including tropical, coldwater, and marine setups, as well as koi ponds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable \u0026amp; Long-Lasting\u003c\/strong\u003e — Simply rinse and reuse. Replace every 3 months to maintain peak filtration performance and support healthy bacterial colonies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent Water Permeability\u003c\/strong\u003e — Lightweight, soft, and highly permeable foam ensures consistent water flow without clogging.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePPI Guide — Choose the Right Density\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e15 PPI (XL Pore)\u003c\/strong\u003e — Coarse pre-filtration; ideal for removing large debris and particles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25 PPI (L Pore)\u003c\/strong\u003e — Medium-coarse; balances mechanical and biological filtration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35 PPI (M Pore)\u003c\/strong\u003e — Medium-fine; excellent for biological filtration in most setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 PPI (S Pore)\u003c\/strong\u003e — Fine filtration; maximizes surface area for bacterial growth and polishing water clarity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Dimensions\u003c\/h3\u003e\u003cp\u003eMultiple sizes available: 50×12 cm, 50×25 cm, 50×50 cm, 100×12 cm, 100×50 cm — in various thicknesses (2 cm, 3 cm, 4 cm, 5 cm). Select your preferred size and pore density from the options above.\u003c\/p\u003e\u003ch3\u003eImportant Note\u003c\/h3\u003e\u003cp\u003eThe bio sponge is vacuum-packed and compressed for shipping. If it appears smaller or thinner than expected upon arrival, simply lay it flat for 1–2 days and it will fully expand back to its original shape. Vacuum compression does not affect filtration performance.\u003c\/p\u003e\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 × Bio Sponge Filter Media Pad (size and PPI as selected)\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eNote: Please allow 0–2 cm tolerance due to manual cutting.\u003c\/em\u003e\u003c\/p\u003e","brand":"Nestora Eco","offers":[{"title":"15PPI XL pore \/ 50x12x2cm \/ United States","offer_id":47767731241111,"sku":"14:29#50x12x2cm;200007763:201336106;5:100014066#15PPI XL pore","price":50.28,"currency_code":"USD","in_stock":false},{"title":"50PPI S pore \/ 100x50x5cm \/ United States","offer_id":47767731273879,"sku":"14:200006152#100x50x5cm;200007763:201336106;5:361385#50PPI S pore","price":176.3,"currency_code":"USD","in_stock":false},{"title":"35PPI M pore \/ 100x50x5cm \/ United States","offer_id":47767731306647,"sku":"14:200006152#100x50x5cm;200007763:201336106;5:361386#35PPI M 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