I have put up some data on oxalic trickling: http://www.algonet.se/~beeman/research/oxalic/oxalic-0-nf.htm -- Regards P-O Gustafsson, Sweden [log in to unmask] http://www.algonet.se/~beeman/ :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::