Im considering removing the live rock from my 75 gallon aquarium. I have 2 Rena xp2's packed with filter pads for the first tray and a ton of ceramic rings for the second tray. I plan on redoing the tank completely. New fish, new decor, gonna keep my deep sand bed and use a very large sunken ship for hiding places. Is the live rock a necessary item or will the ceramic rings and Ddeep sand bedor support the tank. I plan on building a refugium out of an Aquaclear 110 I have. Im just concerned about the impact of removing the rock. My filters are cleaned once a week. Filter pads rinsed and rings rinsed in aquarium water.