Description Are you looking for a professional, yet affordable filter cotton for fish tank and aquarium? Are you in search of a supple, trustworthy filter sponge that can be used in fish tank? If yes, look no further! Our filter biochemical cotton pad, made of safe material, must meet your needs. Features - Color: Black-Material:Sponge - Size: 46.00X46.00X5.00cm/18.08X18.08X1.97in - This filter cotton pad is easy to clean, and you can use aquarium filter cotton for a longtime.- Though the filter cushion is simple design, it's so practical when you use it to filter water.- The excellent workmanship of our filter biochemical cotton pad will bring you a good using experience.- Made of well selected materials, this cotton pad has super toughness and resistance to pressure.- High water permeable feature and filter effectively, this filter biochemical cotton pad is not easy to deform.Packing list: 1 fish tank filter sponge Note: 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. Sold by-Dadangjia