Bio-Balls have many uses in freshwater, saltwater and ponds. They can be used
-as biological filter
-to increase oxygen levels
-to quiet over-flow boxes
-and degassing.
Cutting Reef Bio-Balls are designed to be non-clogging and have maximum surface area for their size.
-1 gallon bag, 295 balls
-3 gallon box, 885 balls
-7.5 gallon box, 2212 balls