ALUMINA AIR STONE HAS 1/2" NPT - 6" LONG

Description

EASYPRO AS650 GLASS ALUMINA AIR STONE HAS 1/2" NPT - 6" LONG. New condition free shipping within US through USPS.
These are as mentioned new and were purchased for my aquaculture facility and never used. They have been stored in a pole barn but again are new and have never seen water. Approximately 300 air stones for sale.
Alumina Air Stones Feature:
"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.
Higher density means self weighting.
Cleanable with muriatic acid or chlorine.
More resistant to ozone.
Creates finer bubbles for increased aeration efficiency with no increase in pressure.