Nutritional Deficiencies, indications and adjustments

Hey guys!

I’m on the 8th week of my grow and everything was going good. I was giving pH perfect (Micro-bloom-grow) as instructed once a week, whilst watering as required with filtered water (pH 6.0-6.8).

I started noticing discoloration on the lower fan leaves and other newly developing branches. I’ve uploaded the pictures. Can you help me figure out what’s wrong and how to fix it?

newbie here, but have gone through this already. Chart attached. it looks like either a calcium or magnesium deficiency , but look at attached chart.

@jetlag is on it :+1:. Looks to me like a mag deficiency . Purple stems, yellowing between the veins