“Alumina” air stones – three times stronger than white silica air stones! Produces a finer bubble with no increase in pressure.
Inlet fittings are set into the body of the diffuser, making them much less likely to break or twist loose.
AS1237 Alumina Airstone – 1 1/2" X 1 1/2" X 12" – 3/8" barb
SKU: AS1237
$34.19Price