"The Airstone allows oxygen to dissolve into water by breaking a stream of air into thousands of tiny bubbles, which can be a critical component in the successful aeration and health of a pond or lake. Compatible With Pond, lake, Application Oxygen dissolves into water, Product Type Windmill accessory, Accessory Type Diffusers and buckets, Material Type Airstone, Includes qty. 1, Size in. 7. This is critically important in any climate with below-freezing temperatures"
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