Biotube ProPak pump packages from Orenco Systems filter and pump effluent from single- or dual-compartment septic tanks to either gravity or pressurized discharge points without the need for a pump tank. The filter cartridge filters up to two-thirds of solids, so only liquid from the clear zone is pumped, reducing biological loading and component clogging. Components can be quickly installed and easily maintained. Filter cartridges are easy to remove and clean without pulling the pump vault. High-head effluent pumps are field-serviceable and repairable, and engineered to withstand start-stops and run-dry. Pump controls are specific to each package, and multiple models are available. 800/348-9843; www.orenco.com.