Pondmaster® 7" Diameter Ring Air Diffuser

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The Pondmaster® 7" Diameter Ring Air Diffuser has a total length of 18" and has 48" square inches of active surface area. It is designed for use with the Pondmaster® AP-40, AP-60 a nd AP-100 air pumps. The recommended tubing sizes are 3/4" or 1", but no tubing is included with the diffuser. Instructions Show more