If you are looking for a professional and Aquarium Filter Media, then your research is over here. That’s because our product can meet your need. Adopted of , it is durable and practical for long time use. It will be the good choice for you. Features -Color:Light Grey -Material:Minerals -Size:15.80X3.60X3.60cm/6.21X1.41X1.41in -Note:Different batches have differences in weight. -Hollow design to increase surface area. Effectively the cleaning ability, adsorption capacity. -Porous surface is good for permeability and adsorption capacity -It effectively absorbs fish waste and debris, providing clear water for fish to thrive, thereby enhancing fish . -It can be cleaned and reused, which is practical and , saving your money. -Perfect for freshwater aquariums. Like aquarium filter, sumps tank and ponds. Crack into pieces to different size up to your needs Package list: 10 x Aquarium Filter Media