Bio Ball HJS-40 Sunsun 2.5lt Canister Filter Media

SunSun HJS-40 Bio Balls Aquarium External Filter 500ml * 5 Boxes

Bio Balls are used for the aquaristics as a mechanical as well as a biological filter medium.

They offer a large settlement surface to bacteria and are considered to be high-efficiency carrier material particularly for large filter systems. 

Unlike many other filter media, Bio balls also offer a practically unlimited lifetime which makes them a popular and low-cost medium especially in pond filter systems, and trickle and chamber filters.

The SunSun HJS-40 Bio Balls have a diameter of 28 mm. There are 40 pieces included in a package unit.