Pieces of wood can be very toxic if they are pressure treated or have come in contact with paint, stain, varnish etc. If you want to use wood, make sure it is new and untreated. Also stay away from pine. Carol < ' )))>< _______________________________________________ Aquatic-Plants mailing list Aquatic-Plants at actwin_com http://www.actwin.com/mailman/listinfo/aquatic-plants