Aqua Medic Wooden Airstones Maxi for air driven protein skimmers, our Wooden Airstones are produced from lime wood with very fine pores. To keep the skimmer running at its optimum performance level, the bubbles have to be monitored regularly. We recommended that they are changed every 6 – 8 weeks.
Dimensions: approx. 90mm x 30mm (3.5 x 1.5 in.)