Long-distance circulation technology combined with air-powered pumping makes GridBee AP Air-Powered Mixers from Medora Corporation well-suited for mixing aerated and anoxic wastewater treatment basins with high mixed-liquor suspended solids (MLSS). In aerated basins once the oxygen demand is met, the aeration intensity can be reduced without losing the MLSS, leading to energy savings. In anoxic basins, the non-clog design mixes thoroughly to enhance denitrification while significantly reducing maintenance. Units have no impeller and no moving parts. They have a high flow rate and are self-cleaning; stringy material and rags flow through. Pedestal and floating models are available. All are portable, compact, lightweight and easy to install. 866/437-8076; www.medoraco.com.