32mm Bio Balls For Pond Aquarium Fish Tank Filter Box Sump Plastic Bio Media

Finest Filters 33mm diameter bio balls are suitable for effective bio filtration in aquarium and pond filters alike.

These bio balls are supplied in boxes of 150pcs. Please select the number of bio balls required from the drop down menu when ordering.

These are our larger bio balls (32mm). We also stock smaller 26mm bio balls in our eBay store.

Bio Balls have an extremely large surface area, allowing beneficial bacterial to colonise, biologically filtering your water.