>>It's the dihydride which is normally used. If you use the anhydrous stuff, it will be necessary to use less in order to avoid overdosing. I have only seen/used the dihydrate. I'm glad that it was clarified that the ratios given are based on the dihydrate. Waldemar :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::