- The Ecologix membrane diffusers were developed for special applications in water and wastewater aeration. Their outstanding features are the possibility to using them in all processes of Activated Sludge System, SBR operation, Contact Bio-reactor, Oxidation Ditches and Oxygenation for fish pond. In both retrofit and new installations, Ecologix diffusers lower installation and operation cost by ...www.ecologix.com