yellow new growth

[canadianhemperor]

im having a similar problem with my bubblegum strain. i have attached a picture as to increase the odds of possibly identifying what the problem may be.....

they are growing in cocoand are receiving a aact once a week, nutes between along with plain filtered water.

just tested the ph runoff of a fresh water rinse: 7.06
ppm: 648
i feed heavy 16 bloom a and b and prime, humbolt's deuce deuce, ginormous, and honey.
the tea feed gets brewed with ancient earth by GH, molasses and sea kelp


any ideas brother?

648ppm without any nutes? thats too much,any concentration higher than 10 ppm in water . is too much for me.