week 4 flowee what is going on with this leaf looks hungry?

[theweedman420]

Feeding half strength of fox farm nutrients lineup but some leafs are Turing yellow on 1 of the bigger plants looks like rust in middle of leaf should I feed moor or?

 

[mushroombrew]

Check pH first. What media?

It looks like mag deficiency and a tiny burn. So your pH is likely off causing mag lockout.

Calibrate your meter if you have one.

 

[theweedman420]

Using drops for ph..

 

[mushroombrew]

What media? Have you checked runoff pH?

 

[theweedman420]

Ph was good I'll check again when lights come on.. In ffof

 

[w3rds]

leaves are supposed to discolor during the second half of flower... my plants are a week from harvest and 90% yellow leaf.

With the exception of tigerbloom, you really have to try hard to nute burn on FF nutrient line.