Poorly fan leaves 3 weeks bloom

[Torog]

Help Help me Plz with this problem most of my fan leaves are turning yellow but all the veins are green any ideas what it could be, im in coco using ionic bloom tia ph 6 food 18

Howdy topman,

Well,at first glance,it looks like your problem is lack of enough nitrogen..but we need to know a little bit more about your grow set-up,is it a hydro set-up ? How much light and type of light,do ya have ?

It may well be,that your plants are simply shedding the older fan leaves,and are taking the nitrogen in the process of shedding.

Have a good one...Torog