>>Having used oxalic for 5 years, I must say that I have not seen or heard from any problems with oxalic + iron. <...> I heard that rhubarb contains oxalic acid and that its consumption should be avoided. I remember eating delicious pastries made with rhubabrd as a child... Waldemar :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::