I have just set up my 20' Intex Ultra Frame Pool and absolutely love it! I have been on the BBB method for two years now and will never go back and have actually converted several of my friends to the BBB method also! My question is does anyone know if there would be any problem with using roundup to kill the weeds and grass around the edge of the pool without hurting the liner? I don't mind pulling them by hand but I would like to remove the grass and "weeds" and put down some mulch just to make it look better. Any hints and tips would be greatly appreciated!