Plant issues. Possible Cal deficiency?

I'm in week 6 of flower grow Sterking haze by Nirvana. I noticed some leaves changing around week 4 or so but it has got much worse. I PH my water and nut mix before feeding and have been giving then foxfarm big bloom and tiger bloom. Temps never get any higher than 81°. Any input is appreciated!

Here are some pics

Potassium deficiency. Probably magnesium as well. You can foliar spray magnesium. Are you using any microbes? Mycchorizae?

No not using any microbes. Do you think that might be playing a role in the plant issues?