Natures Ocean Marine White Sand 9 Kg / 20 lbs

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 •Reduces Nitrates •Does not affect pH •100 % From The Ocean Floor •Heat Sterilized •Ideal for culturing Live sand Benefits: 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. Recommended: 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.