The Ecoflo Biofilter from Premier Tech Aqua is offered as a nitrogen-reducing unit, thanks to an add-on kit comprised of a pressurized flow divider that recirculates a fraction of the water back to the primary tank, and a simplex control panel that manages the dosing pump cycles and monitors all records. It is available in ready-to-use rotomolded shells or as a kit to be integrated into existing tanks. The system uses a natural and compostable coco husk-based filtering media capable of sustaining high hydraulic load rates, according to the manufacturer, which says it is an ecological, high-performance and low-maintenance septic system. The system is NSF-245 certified. 717/479-0005; www.premiertechaqua.com.