Take your aeration system to the next level with the OWS Double-Disc 9 inch Rubber Membrane Diffuser with Self-Sinking Base. Engineered for maximum oxygen transfer, this diffuser uses dual 9 inch self-cleaning rubber membranes to create an ultra-fine bubble pattern that efficiently circulates and oxygenates your pond or lake. Unlike stone diffusers that clog and demand constant cleaning, the flexible EPDM rubber discs resist buildup and deliver consistent performance over time. And thanks to its integrated self-sinking base, installation is effortless-simply connect, drop in place, and start aerating without the hassle of weights or added ballast. Built from heavy-duty, corrosion-resistant materials, this diffuser is designed for long-term performance in even the toughest environments. Whether youÕre preventing fish kills, clearing up stagnant water, or maintaining a healthy ecosystem, the OWS Double-Disc Diffuser offers unmatched durability, efficiency, and peace of mind. Clear water. Healthy fish. Low maintenance. Exactly what your pond needs.