Aquarium Biochemical Filter Sponge Sheet (50x50cm, Super Thick, Bio Cotton for Skimmers)

Set up powerful, reliable filtration with this oversized, super-thick Biochemical Filter Sponge Sheet! 🧹

• 📏 Large 50x50cm Size - ideal for cutting to fit any sump, canister filter, or DIY filtration system.
• 🧱 Super Thick 1cm Profile - dense, durable foam provides both mechanical and biological filtration layers.
• ✂️ Easy to Cut & Shape - trim to any size needed for a perfect custom fit in your filter housing.
• 🧫 Bio Cotton Media - open-cell structure hosts beneficial bacteria for natural water purification.
• 🔁 Reusable & Long-Lasting - rinse in tank water and reuse repeatedly before replacement is needed.