4000pcs 1 Bio Balls 16 Gal Aquarium Filter Media Pond Canister Filter Media

  

Clarify your water naturally and cultivate beneficial bacteria with these Polypropylene Bio-balls! With the 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. In the event of excessive buildup, you may gently rinse with water from an established aquarium, if desired.

Diameter of bio ball: 1 inch. Size of media mesh bag: 16x16 inch. 4000 pieces of 1 bio balls in 4 media bags, approximately 16 Gal.