Any kind of Media that needs changed ?Panty hose inside the tank on the hose barb works, but performance degrades with use. They enlarge under a vacuum load and are one of the leading causes of foaming in the tank right at the surface of the recovered water as they start to fill. On some commercial work we couldn't clean but 1500 ft² before having to shut down the TM and change the filter socks in dual in line filters because the wand was gurgling.
Giving the debris laden water and air separate paths maintains the top performance at the wand start to finish. No other carpet cleaning filter I know of does this. This filter also picks up the recovered water from the bottom of the tank while maintaining high airflow at the top of the tank for maintaining the performance you paid for all day long. I haven't found a different acceptable way to accomplish tight filtering for an apo and lossless performance at the wand.