World Wide Imports Nature's Ocean Premium Marine Substrate - Marine White Sand #0 20 lbs

World Wide Imports Nature's Ocean Premium Marine Aragonite Gravel Substrate for saltwater or reef aquariums. Benefits of Nature's Ocean® Reef Substrates:•Ideal for reef system tank bottoms•Denitrifying anaerobic beds •Extremely high surface area filter media•Reduces Nitrates•100 % From The Ocean Floor•Heat Sterilized•Ideal for culturing Live sand Recommended:Use at a rate of 10lbs per square foot of the tank floor's bottom area which yields about a 1" deep covering. Depending on your needs or preferences the depth may vary from 1/8" to 3"s of covering.