EasyPro BB05 Bio-Balls with Mesh Media Bag | 200 Count | Plastic Filter Media for Biological Filtration | 1 1/2″ in Diameter | Durable and Lightweight | Easy to Clean and Reuse
These plastic bio-balls are a great media for use in all types of filters. Can be used as a loose media or in mesh bags for easy removing and cleaning. Includes a free mesh bag. This product will not compact like other soft media and reduces channeling of water around media.