only reason I got into the foliar feeding, was I read Mel Frank and Ed Rosenthal's book about growing, many years ago .. imp: .. anyway, they claimed at that time, if you only foliar feed, you won't over-fertilize ... being paranoid with my first grow, I followed instructions, and all went well ... Im not too informed as to the new nutrients, or hydroponics, either ... just an ol' dirt farmer .... :smokin: