Hey guys, I'm running a drip system. The PPMs are around 190, my water is roughly 130 PPMs. Right now I am watering 30 minutes on, 90 off. I had it at 30 on, 30 off, and I noticed that the leave tips were starting to curl. Now I am starting to think it might have been too much N, because I originally had the PPMs at around 350 or so, but cut it back. You might be able to notice some spots, that's why I cut it back. Anyways what do you guys think it is? Over/under watering, too much N, pH fluctuations, too much heat? Thank you