Matala Hakko Self-Weighted Diffuser Discs

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Matala Hakko Self-Weighted Disc Diffusers are EPDM air diffuser assemblies that feature weighted bases that help keep the diffusers anchored to the bottom and right-side up. We rec ommend the MD-3W up to 7LPM, MD-5W up to 25 LPM, and the MD-7W to 40 liters of air per minute. Produces medium bubbles, reducing back-pressure on the pump SKU Membrane Diameter Connection Net Weight MD-3W Silicone 3" 3/16" 0.47lb MD-5W EPDM 5" 3/8" 2.36lb MD-7W 7" 3/8" 3.32lb Show more