In your post oldsanclem, are you saying that if you see 1/32" burn in the leaf tips, that you add nutrient until you see more of the leaf tips burned (1/8"), and then back off nutes slowly until they stop burning?

Also, I have a truncheon-style EC meter, it's actually a 'D.S. Dipstick,' made in New Zealand. The unit says factory calibrated, and I cannot find any solutions for it nor a way to calibrate it. Are these units really self-calibrating for as long as they last?


Thanks in advance.