The Outdoor Water Solutions airstone plays a nessasary part in creating effective aeration for a pond or lake. The airstone transforms air into thousands of little bubbles as a result of this oxygen can dissolve into the water and therefore increase its condition. Diffusing air into water can improve its effectiveness by over 1000%. The airstone diffuser kit comes with a foot valve that stops water from coming back up into the aeration tubing. It can be used with many air sources for example electric aerators, solar and even wind-powered aeration systems. It is important to note that shallow or larger ponds may need multiple airstone diffuser kits.