abstract:An airstone, also called an aquarium bubbler, is a piece of aquarium furniture, traditionally a piece of limewood or porous stone, whose purpose is to gradually diffuse air into the tank, eliminating the noise and large bubbles of conventional air filtration systems, and providing other benefits to the health of the fish. Airstones are sold in a very wide variety of shapes, sizes, and levels of coarseness – from extremely rough, producing larger (though still typically unnoticeable) bubbles and letting in more oxygen--to very fine, producing minuscule bubbles.
Tim Marsano, a spokesman for the Idaho Air National Guard, said Stone was an air liaison officer with the Army's 101st Airborne Division at Camp Pennsylvania in Kuwait.
And with each new layer of stone the air got warmer and began to smell, at first something like a laundry hamper, then more like inside the mouth of a sun-baked cadaver.
Then she found Victoria Beckman, a Russian immigrant laying out family photographs and documents in the cold air along the two stone railings leading from her front door to the sidewalk.