I think the well water may be part of the problem. If your ph is high (alkaline) it tends to lock out nutrients and looks like over fert or water because you think you need to flush because you thought you over fertalized. try feeding with some distilled water from the water machines in town for a week and see what happens. but don't go tinkering around with more or less nutes in an attempt to solve something. give the plant a blank canvas and go from there...good luck