Nature's Ocean Bio-Activ Live Aragonite Saltwater Aquarium Sand, Natural White #1
The description says 1-1.5 mm grain size. Wrong this is sugar sand with a few shell pieces tossed in. Four days to clear up. Had to clean out filters daily because they were plugged up and overflowing.
Great price and great sand,I gave it 3 stars because the bag had a whole in it and leaked all inside the box