All of these things take away flow and pressure from the in-floor cleaning system. When the in-floor system does not have proper flow and power it will not clean properly. Contact Technical Support at Paramount Pool and Spa Products at 800-621-5886 or jserkland@1paramount.com for technical support to get help on whether or not you can add any of these things to your pool and how they would affect the clean ability of the in-floor system.