ECD270-E | 9” EPDM FINE BUBBLE DISC DIFFUSERS SSI Aeration Fine Bubble Diffusers combine engineering excellence, superior component quality, and a technically advanced product design. Perfect for Aquaculture farming including fish, mollusks, crustaceans and aquatic plants. Dock De-icing – Aeration prevents water from freezing. Control mosquito breeding areas in ponds and lakes by circulating and agitating the surface water. Aeration Applications in Ponds, Aquariums, Wastewater Treatment, Lakes, Dock Deicing. Proven highly durable and efficient in thousands of municipal and industrial installations around the world, these advanced systems have reliability built into every stage of performance.