Features: brand new and high quality
Effectively absorbs particles and debris; Suitable for both freshwater and saltwater filters.
Resolve impurities, stabilize PH, clarify your water naturally and cultivate beneficial bacterias with these bio balls.
Allows more oxygen to be dissolved in the water.
Includes: Total about 1.1 Lbs (500g).
The aquarium filter media is made of high temperature firing ceramics, not easy to pulverize, and durable.

Specifications: Material: Ceramics
Color: As Pictures Show
Size: Irregular Shape Hollow Bio Balls
Weight (Approx.): 500g/1.1Lbs

Package Includes: 500g Bio Balls Aquarium Filter Media

note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.
2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!