I have to take a soil sample, allow it to dry, and then I have various cylinders to measure and pour into. Some of the water they get is alkaline, but since the soil still reads acidic, I didn't think unpHed water would hurt them much.
It has begun to affect other leaves too, and thats why I'm sure it is something I can control. My foliar spray is P & K heavy, but I don't use often.
I'm sure this is partially to blame. About two weeks ago, I doubled up on the veg nutes. Makes sense they show signs now. Salt buildup in those...
That shouod say were getting. I have switched to a low N fert for about last two feedings. Practically once I saw the pistils, I stopped with the 16-16-16 and went with a 3-20-20.
My two most potent plants are suffering from what appears to be nitrogen toxicity/Calcium Magnesium lockout/deficiency. The leaves are cupping under somewhat, and they have yellowing/browning spots that aren't along the veins of the leaf, but only on the broad parts filled with chlorophyll...