God Bud. Had been more or less happy, but a bit neglected. Was well past due for a repot, but after repotting it this showed up. The plant needed more soil, so it could be a deficiency, or maybe it did not like something in the new soil.
Any guesses what this looks like?
Stages of progression.
Almost looks like light burn but it’s on lowers, do u have a foil,mirror or reflective material around the grow that can concentrate light to focal points?
Do any of the older leaves have that interveinal chlorosis? It looks like it might be a potassium excess but I wouldn’t listen to me as I dont have all that much experience with this.
If as you say it has been neglected could be this … 
I did add dolomite lime to the new mix!
You mean that could have raised pH out of wack? 
Quite possibly. At least this plant was sensitive to it. I was just trying to add Magnesium to my soil. I might try Epsom Salts instead next time. It is all a journey and an experiment. Thanks for your two cents
Dolomite is one of a group of soil additives that need to be mixed in weeks (6 is nice) before you use it. Usually I pair Dolomite with peat based products, like Promix etc.
Cheers
G
I have that on my franks gift. Pot is too small, 7 gallon. Week or 2 tell harvest. I always ph 6.5 water. Soil is unknown ph. Looks like copper rubbed on it. I got help reading this thanks.
Looks like a PH fluctation with a little added nitrogen toxicity.
