Quoting Michael Watterson : > Quite normal for large variation between entire trays of plants. you > certainly need double blind test and very large samples "Double blind"??? So they won't tell the trees whether being exposed =20 to wifi or not? :) --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .