New design of bio-sponge inside, the biological loads are maximized within much smaller filter areas

Bio balls do not require replacement unless damaged or destroyed

Free reusable media bag for easy handling

100pcs 0.62-Inch Aquarium Bio Balls Filter Media, Aquarium Fish Tank Filter Media, Pond Media Filter Balls with Media Bags

Bio balls is hollow sphere made of plastic material,which has a large surface area.

The pond filter media is light in weight and easy to carry, it can be used in seawater or freshwater.

Flexible and easy to use, you can add them in canister filter, top filter, fish pond filter or bottom filter etc.

Each filter media ball is 16mm in diameter which is easy to clean.

Includes: 100 pcs bio balls in 1 media bag.

Reliable Material: bio balls for aquarium filter are made of quality polypropylene and plastic material, safe and reliable, not easy to break or wear, the spherical shape and pore location allow for tight compression and a porous design that does not clog easily