8D Sponge Filter Cotton Pad – Aquarium Denitrifier & Fish Tank Foam Filter Accessory

Keep your aquarium clean and your fish healthy with this 8D sponge filter cotton pad, engineered to improve water quality and boost beneficial bacterial growth. Designed as an aquarium denitrifier filter, the thick, multi-layer design traps debris, prevents clogging, and supports biological filtration that breaks down harmful waste. Made with durable foam material, this fish tank foam filter accessory fits standard sponge filters and helps maintain clear, balanced water in freshwater or tropical aquariums. Whether you’re a beginner or experienced aquarist, this filter pad brings improved performance and longer life to your filtration system.

Product Details

Key Features

• 8-layer high-density sponge enhances mechanical and biological filtration

• Durable foam construction resists breakdown and preserves water flow

• Designed to improve beneficial bacteria colonization for healthier tanks

• Compatible with most sponge filter systems for easy maintenance

Why Choose Our 8D Sponge Filter Cotton Pad
This multi-layer non-gel filter pad delivers superior filtration compared to traditional thin pads that clog quickly and reduce water flow. Its dense layers trap fine particles while offering ample surface area for nitrifying bacteria, which helps keep ammonia and nitrites in check. Easy to rinse and reuse, it’s an efficient upgrade for your aquarium’s filtration setup.

Perfect For (Occasions & Uses)

• Freshwater and tropical fish tanks

• Shrimp and planted aquariums

• Routine tank maintenance and improved water clarity

• Aquarists seeking better biological filtration performance

How to Use
Remove the old sponge filter pad from your filter unit, insert the 8D sponge in its place, and rinse gently under tank water during regular filter maintenance. Replace as needed based on debris buildup and tank conditions.

Boost Your Tank’s Filtration
Add this aquarium denitrifier filter pad to your setup and enjoy clearer, healthier water — and happier fish — with every filter cycle.