SaniTEE effluent filters from Bio-Microbics are available in 4-, 8- and 16-inch sizes and provide consistent retention of wastewater solids from a septic tank. They can be used as a stand-alone filter in a tank or prescreening with a complete wastewater treatment system. They reduce suspended solids discharged in the septic tank by promoting natural sedimentation and exclude gas-lifted particles from entering the outlet pipe. Installed directly in the outlet tee of the tank, their keyhole weirs provide consistency of flow despite surges. The angled slots resist blinding and prevent clogs inside the filter housing to extend system life, reduce clogging material and improve flow conditions. The slip-in installation design and swabbing feature for cleaning in place make it easy to maintain. 800/753-3278; www.biomicrobics.com.