Genesis Rock 4-Pack Eheim controllable method for nitrate and

controllable method for nitrate and phosphate reduction

increasing the rate of phosphate-reduction and denitrification

Metal Blade Material - 316 Stainless Steel

The Shadow® Overflow is a device that is used to divert water flow from your aquarium into your filtration sump

A Favia Classic As Old As Time

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