Jack my blueberry's were extremely sensitive to nutes early on (you are hydro right?) and I ended up backing them down to no more than 400 ppms for the first several weeks....tried to move them up but they were not happy. Then towards the end they sucked up huge amounts of nutes like crazy. (that's 400 w/ro water....50/50 Cal Mag and pro grow) Hey I thought you were retiring the growing thing.....glad to see you back.