Water Tech Various Cleaners Xtreme Multi Layer Filter Bag (P30X022XF) gptools An auxiliary topside panel can An auxiliary topside panel can make a spa feel much more complete because it gives users access to important functions from a second location instead of forcing every adjustment through the main control point Replacing a tired or sticking check valve with the proper Waterway model can improve reliability and system confidence The P30X022XF is a practical performance minded replacement when a compatible Water Tech cleaner needs a more robust filtration option Upgrading the bag can often improve practical cleaning results without requiring changes to the rest of the cleaner