Supa Airstones, when connected to an air supply, simply diffuse the air via a fine mist of bubbles into the aquarium thus oxygenating the aquarium. Supa air stones are made from non-toxic quality materials and are a great aid for aerating a fish tank. Designed to fit airline tubing with an internal diameter of 4mm and an external diameter of 6mm. Part of an extensive range of airline accessories from Supa Ltd Hints & Tips: Supa air stones provide, when connected to an air pump, a fine mist of air bubbles. This is achieved as the air stone is made from high quality sintered ceramic material which means that the stone has many fine holes in it which allows the air to escape into the water. The air, when it enters the aquarium or fish tank, provides aeration of the water plus stimulates the circulation of the water which stops the formation of stagnant water. Air stones should be cleaned when needed and will also need to be replaced occasionally to ensure they are working to their maximum efficiency. The length of time between changing your air stone can vary between a few months and a few years as the life of the air stone will be affected by the PH of your water, what chemicals your use in fish tank etc.
