Wood Burning fire bowls require a drainage hole. The bottom of the fire bowl should be filled with gravel for proper drainage. A rough sand, such as silica sand #20, should be poured on top of the gravel, filling the bowl until 2 - 2.5 inches below the top of the fire bowl. After the sand is poured the firewood is placed on top of the sand, in the middle of the bowl. The bowl in the photo DOES NOT have enough sand.
As always, when dealing with fire caution is required:Never burn huge pieces of wood.Do not burn when it's windy.Make sure that the flame is completely off when you’re done.A Spark Arrestor is recommended, so that embers do not fly. A Spark Arrestor can be purchased at your local Home Depot, and should sit on top of
the sand; NOT on the concrete lip as they will leave rust marks on your
beautiful fire bowl.