Excellent quality grey/blue air stones that have been heated to a high temperature (1300 °C) to harden an aluminium alloy.
For the best aeration, the stones' high porosity creates very tiny air bubbles.
shock-resistant and corrosion-free.
suitable for ponds, aquaculture, ozone generators, air, marine, and medical uses.
For the best aeration, the stones' high porosity creates very tiny air bubbles.
shock-resistant and corrosion-free.
suitable for ponds, aquaculture, ozone generators, air, marine, and medical uses.
