Alumina Airstone - 1 1/2" X 1 1/2" X 3" - 1/4" barb
$19.94
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This high quality, fine bubble diffuser is constructed of an Alumina product, which is 3 times stronger than glass-bonded silca air stones. it has a 3/8 barb fitting
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$17
$19.94
(+$2.94)