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Vitamin C 8500 mg / kg
manganese or selenium
Remaining smaller individuals are usually tolerated but will not be reproductively active
universities
PolypLab Genesis Rock Pumps Vitamin C 8500 mg /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 2 Rocks Included in Set Reduces Phosphates and other dissolved organic compounds. Increased Beneficial Bacteria Colonies Zero Leach Technology 100% Fired Ceramics Looking for the ultimate combination, check out our Genesis Rock Booster pack which includes