was just cleaning savio filter and pulled pump to clean it . i swish a small net around in filter housing to get particulates that i can . i then occasionally take my small vacuum and suck some dirt from bottom of filter housing . my small vacuum is a two liter pop bottle with a 1/4 inch hole drilled in the bottom . i invert bottle [cap end down] , put my finger over the hole in bottom and push bottle to bottom of housing , regulate vacuuming action by varying finger pressure on the 1/4 inch hole . bubbles stop i lift bottle covering cap end and if water is dirty pour it in garden . thought someone might find this idea helpful . . peace