Grain size : 0.1-0.5 mm
Benefits of Nature's Ocean® Reef Substrates:
•Ideal for reef system tank bottoms
•De-nitrifying anaerobic beds
•Extremely high surface area filter media
•Does not affect pH
•100 % From The Ocean Floor
•Ideal for culturing Live sand
Reduces Nitrates. Does not affect pH. Pre-washed Minimum Rinse Required. 100% From The Ocean Floor. Heat Sterilized. Ideal for culturing Live sand. Will not alter the chemistry of your aquarium water.
Use at a rate of 10 lbs 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.