Specifications: 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. Item Name: Biochemical Sponge Filter Material: Sponge Features: Portable, Durable, Easy to Use Size: 50 x 50 x 2.5cm/19.69 x 19.69 x 0.98' (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Biochemical Sponge Filter
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