  Sandstone (Blue) 12" Airstone
The Sandstone Airstone will produce a 12”
long wall of bubbles. This blue stone will hide in the gravel but will work best
if it is not covered by the gravel.
Instructions:
Because of the length of the stone and air pressure needed to operate the 12"
Sandstone, the recommend air pumps are the Rena Air 400 or Tetra Tec DW-96
Size:
12" long x 3/4" wide x 3/4" high
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