AzureGreen1lb White Incense Burner Sand

What is the difference between regular ole sand from the beach and this one?

Could I use this in a small fish tank?

Could I use this in a bowl as a base to tamp down and mold my incense powder? I usually use rice chaff ash.

Will the sand allow joss sticks (Japanese incense) to keep burning through past the sand to very end of the stick?