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20 inch long tube diffuser producing fine aeration bubbles. This diffuser has a 3/4 inch male/female fitting.<br><br>

Atlantic Diffusers Fine Bubble Tube Diffuser, AB-70009, 2- 5/8&quot; Dia., 20&quot; L, 3/4 FPT

fine-bubble-tube-diffuser-ab-70009-2-5-8-inch-dia-20-inch-l-3-4-fpt

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