Sell Biochemical filter sponge, for aquariums, reusable, black best price

Product name: Biochemical filter sponge Material: sponge Color: Black Size: 7.5 x 6.5 cm / 2.95 inchx 2.56 inch (H * D) Provides biological and chemical filtering and increases the solubility of oxygen in the aquarium and fish tanks. Dense honeycomb shape makes it effective to avoid residue and reduce the mortality rate of fish. You can cut the size as you need it. Can be used again after cleaning. Weight: 6g Package Included: 1 x biochemical filter sponge Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/-1-3cm.