Leaves falling/dying, various deficiency symptoms. Nutrient lock?

Cal/Mg??

The burnt tips in pic #1 and #4 I’m pretty sure are just from plants stretching too close to the light, so I raised them up some.

Damn... so I think I finally solved this one.

Almost positive I seen a fungus gnat fly past my face while watering

Added b.t.i. powder to soil and looking for some good organic/essential oil based pesticide (prob. liquid ladybug) Hopefully after that this problem will resolve itself with time and care. I only saw that one gnat so hopefully I’m catching it early.

Thanks FFOF... (they were out of my regular soil and had nothing else useable)