DY 104-A Air Disc 120ml Dia

Excellent quality grey/blue air stones, hardened with an aluminium alloy at high temperature (1300?C). The stones are very porous and produce very fine air bubbles for optimal aeration. Corrosion-free and shock-resistant.
Suitable for oxygen, air, seawater and ozone in ponds, aquaculture, ozone generators and medical applications.

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