If you're in soil you need ph feeds and runoff around 6.5. Kinda looks like a cal/mag deficiency, but you ned to get your ph up first. You need to raise the ph of your feeds with ph up. You said you have all that and never got into it. Why is that? haha. Ph is of utmost importance man. So start feeding around 6.6 to get that to raise back up. But wait until it dries out, you don't want to over-water.