N tox in full swing.  Lowered feeding from 1 Tsp to 3/4 Tsp Cal/Mag, and Grow/Micro from 1/2 Tsp each to 1/4 Tsp each.  Hoping this helps correct.
Is it possible that overwatering also contributed to excessive N uptake?  I let the coco dry out a lot more (~4 days) this time.
 Solved
Week 4Leaves. Color - Dark-purple