HI untaivied, I'm sure more experienced members will chime in, but the first pic looks like some nute splash, and the 2nd pic could be the start of a cal/Mg deficiency- very early though. I see that you just started cal mag- what brand/type are you using? And, at what strength? My first Dinafem WW autos got that way, and being clueless about coco and LED being hard on cal mag uptake (totally my fault for spacing all the advice from folks on these forums), it got pretty bad. Ive got a 2nd grow of the same seeds, and not a spot into week 6! Best of luck!