Bermuda Air Stones are made from special, washed, mineral sand and are sintered at high temperatures for maximum durability.
Easily connects to standard 4mm ID air line fed from any air pump, such as Bermuda Breeze Air Pumps, providing oxygen into your pond by way of a stream of fine air bubbles.
The air stone acts as a weight so you can position it in the most appropriate location in your pond.
It is advisable to replace air stones every four months.