This item is a fish tank filter media, made of natural coral material, very sturdy and durable to use. This product is suitable for many occasions, the size is fit for most fish tanks. Suitable for fish tank and aquarium, and bring much convenience to you. It can bring you convenience to clean fish tank water. Features -Color:Beige -Material:Coral -Size:4.00X1.50X1.50cm/1.57X0.59X0.59in -Note: Random size and shape. - Ideal for aquatic fish, suitable for fresh and saltwater environments, will not harm your small fish - Filter media can be used for fish tanks and aquariums to provide comfortable living environment for fish - Made of selected natural coral materials, the filter media can filter water in all directions - High water permeable feature and filter effectively, not easy to deform, to give you more convenience. - Improve aquarium water quality, improve water quality, and create a good living environment for fish Package list: 1 Set of Coral Aquarium Filter Media 1 x Mesh Bag