GridBee GF electric mixers can displace 30 to 50 hp of aeration run time, improve regulatory compliance and control odors. Applications include activated sludge system basins, lagoon systems and water reuse ponds in municipal and industrial wastewater. Four GridBee GF models are available, providing a choice of single- or three-phase power and a choice of intake designs and mixing capacity. GridBee is a brand of Medora Corp.