These Kockney Koi Air stone 50mm will distribute fine bubble into the water when used in conjunction with a pond or aquarium air pump.

The Kockney Koi 50mm Ball Air Stone is ideal for fish ponds.

Made from a tough and heavy ceramic compound the air stone will sink to the bottom of the pond with ease.

Once connected to a standard 4mm airline hose the air stone will add extra oxygen into the water.

Made from ceramic compound with plastic hose connector, suitable for use with any air pump.

Features:
Approx. 50mm Diameter