"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. Application Oxygen dissolves into water, Compatible With Pond, lake, Includes qty. 1, Material Type Airstone, Product Type Windmill accessory, Size in. 7, Accessory Type Diffusers and buckets. This is critically important in any climate with below-freezing temperatures"
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