If it were me, I'd work on weening your system off of the bioballs, pellets, filter pads. Start slowly so that your system remains stable. Take out half your bioballs and give it a week to 10 days. If all is well, take out the rest, etc.
You can slowly replace the the plastic filters with organic filters. Perhaps use your same equipment for a refugium.
https://forums.saltwaterfish.com/c/index.php/articles/content/refugiums-setup-maintenance-and-tips.144
You can slowly replace the the plastic filters with organic filters. Perhaps use your same equipment for a refugium.
https://forums.saltwaterfish.com/c/index.php/articles/content/refugiums-setup-maintenance-and-tips.144