Is Cali magic a brand? No. Foxfarm happy frog soil, foxfarm tiger bloom at minimum strength every other water. Ph around 7, both supply and run off. I've tried doing no ph adjustments, watering around 8. I've tried watering all the way down to 6. Same thing. Brown spots, from the inner leaf ribs heading outward, over all yellowing.
Got 2 phenos. One real indica like. Short, meaty as hell, slowest grower of the 4. That one really isn't showing a deficiency, minus a few leaves.
The fastest grower, the one I had to top even when I thought it was a candy cane auto, is the worst. Whole damn plant just kinda yellowish. Real heart breaker. That one is huge, thick and so damn covered in crystal goodness.
I would not have chosen sour jack for my first grow ever, but it is what it is.