Genesis Rock 4-Pack Coral Foods This extra temperature port is

This extra temperature port is extra important because

Now when it comes to changing your Deionization resins you only need to replace what has been used

Bituminous carbon is the most commonly used carbon in the aquarium industry

700W (2x 350W elements)

Genesis Rock 4-Pack Coral Foods This extra temperature port isIncrease 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