cut & pasted from my response to you other post;
I have a similar problem; yellow leaves, no spots, no wilt. My yellow is on older leaves, starts at the base, some green around veins, then "burns"/ browns when process completes. I've thought Nitrogen, iron, Mg or calcium deficiency and fed the plants, but feel it must be something with the roots affecting uptake.

That's the color I have on my Opalka Paste. We've been mid 90's here for the last week or so, so I have been watering sometimes in the morning and afternoon. I wonder if it's too much water?

I wondered about overwatering too. It's been 100 plus for about a month; I water twice weekly with drip; in a raised bed with heavy soil. Soil sensor says wet, but I'm not sure it works well.