Feature: ●The material has great thickness, it is durable. ●Very suitable for using in freshwater and marine water. ●Can be cut any sizes as your needed. ●Lightweight and softness design. ●Excellent water permeability. ●Cultivate the nitrifying bacteria for biological filtration. ●Dense shape makes it effective to avoid residue. ●Can be used again after cleaning. ●The biochemical filter has the best effect on decomposing the excrement and the forage leftover. ●Its multi-porous feature will avoid blockages and provide the largest adhesion area for bacteria. Product Attributes: Material: Sponge Color: Balck Quantity: 1 Pcs Size(approx.) :50x50x4cm/19.69x19.69x1.57inch (LxWxH) Package Include: 1 x Biochemical Sponge Filter

• Product Attributes: Material: Sponge
• Color: Balck Quantity: 1 Pcs
• Size(approx.) :50x50x4cm/19.69x19.69x1.57inch (LxWxH)
• Package Include: 1 x Biochemical Sponge Filter

Product Attributes: Material: Spongeimported