Leaves turning brown, Buds dying

[bluedreams15]

Plants are week 7 of flower, lower bud sites stopped getting larger and are now dying the only things alive are the tops of each branch. i have this issue on a few plants but it seems to be popping up in different places around the grow. plants are in coco watering at 6.0 ph

 

[crucialbunny]

Looks to me like its gone to seed perhaps. When they start developing seeds the plant will turn all its attention to seed production.

 

[bluedreams15]

I appreciate the comment, i thought it could be the same but as there are no males in the grow, i searched for bananas on this plant and others but found nothing. Is there another way to see if the plant has hermed?

A friend of mine said potentially russet mites and another said ph at the roots was off. I can take more photos of what the tops look like when i get home, bud growth is slowed but not completely dead like lower growth.