NEED A WELL DOCUMENTED DIARY FOR PROPER HELP!!! YOU SAY IT IS ON DA NEWEST LEAVES!!! DAT CAN TELL YOU A FEW THINGS!!! IT WONT BE POTASSIUM AS POTASSIUM IS MOBILE!!! DAT ISSUE WILL FIRST SHOW UP ON DA OLDER LEAVES!!! ENVIRONMENT,PH IMBALANCE COULD BE ISSUES BUT ONLY A GUESS!! LACK OF REAL INFO HERE!!!