CBF350 Pond Filter Sponges (Pack of 4): Effective biological filter foam, easy to clean and replace, fine blue, coarse and yellow sponges for CBF-350 pond filters

💙[Dual-Layer Filtration for Cleaner Water] - Our pond filter kit consists of two layers: coarse blue sponges trap large debris like leaves and silt, while fine yellow sponges remove smaller particles like dirt and algae. This results in clearer, higher-quality water, creating a healthier environment for fish and plants. Ideal for garden ponds and larger water features.

💙[Safe and Eco-Friendly Materials] - Made from non-toxic, fish-safe materials, these filter sponges promote a balanced aquatic ecosystem. They release no contaminants into the water and provide an ideal surface for the growth of bacteria that contribute to the natural decomposition of organic waste. Keep your pond clean without endangering the health of your aquatic animals.

Compatible with CBF Series Filters: These high-quality sponge filters are specifically designed for the CBF350 models and guarantee perfect compatibility with your existing filtration system. Simply replace your old sponges with these high-performance, efficient sponges for optimal filtration and consistently fresh, clear, and contaminant-free pond water. Easy and Long-Lasting Maintenance: These filter sponges are designed for quick and easy replacement, reducing maintenance and improving filter efficiency. Regular sponge replacement ensures consistent water quality by preventing clogs and ensuring optimal flow. Ideal for pond owners seeking an efficient, low-maintenance filtration solution. 💡 [Eco-Friendly Packaging and Retains Shape] – To reduce environmental impact, our filter sponges are compressed for compact and eco-friendly packaging. They may appear slightly misshapen upon arrival, but this does not affect their filtration performance. Simply let them rest for a few hours or place them in water to restore their original shape. Thank you for supporting sustainable packaging solutions. Recommendation: For optimal water purification, replace the filter cotton every 10 months to 1 year. Quantity: 2 large-pored blue sponges, 2 fine-pored yellow sponges. Blue: The large pores of the filter cotton retain and isolate coarse impurities, which are then broken down by nitrifying bacteria. Yellow: The small holes in the cotton filter trap and isolate small dirt particles.