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Feature

100% From The Ocean Floor
Increases Carbonate Hardness
Provide Marine Trace Elements
Heat Sterilized
Ideal for culturing Live sand

Description

Nature's Ocean Taiwan Coral Gravel #10 20LBS (Grain size: 8.0 -12.0mm). Premium Aragonite Reef Substrate for aquariums reduces Nitrates & Maintains pH. Ideal for reef system tank bottoms, denitrifying anaerobic beds, extremely high surface area filter media. For Best Results Use as Follows: Pre-washed Minimum Rinse Required.