PolypLab Genesis Rock - 2 Pack

Increase the overall filtration power of your tank by adding Genesis Rock to your system. - Designed For Fresh or Saltwater Aquariums
- 23,000+ Additional Square Feet of Bacterial Space For Each Rock
- 4 Rocks Included in Set
- Reduces Phosphates and other dissolved organic compounds.
- Increased Beneficial Bacteria Colonies
- Zero Leach Technology - 100% Fired Ceramics

Rock Dimensions 4 x 4 x 1