STAAR Systems from SeptiTech treat high organic loads that integrate with other technologies and accessories. Smart controllers recognize situations dealing with peak, low, intermittent or no-flow conditions to either slow, stop or restart the system and include many additional features to further enhance quality and dependability. A dual-purpose recirculation pump sprays wastewater over an unsaturated media filter and draws outside air in through use of venturis. The smart biological trickling filter technology also maintains low levels of Nitrate-N. Systems treat 100 to 150,000 gpd with all below-grade components that fit available concrete, plastic or fiberglass tanks. 800/318-7967; www.septitech.com.