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