I used to do soma style beds with ffof years ago. Before I ever started rols. I stopped because I hated the cleanup after the grow. It was a bitch. With rols, it should kick some ass. No cleanup. Just topdress. I suggest using fabric beds. Line the bottom with a layer of pumice. All the fabric pot companies make and sell fabric beds. , smart pot, root pouch, viagrowtm, etc. .. Check amazon.