Any idea what this issue is and how to fix?

[oill]

Anyone have any idea what this might be? I'm thinking ph might be creeping up

 

[hotrodharley]

Magnesium deficiency

 

[Tangerine_]

Anyone have any idea what this might be? I'm thinking ph might be creeping up

Maybe. At this stage they're using a lot of K.
Its hard to tell without more info

 

[farmerfischer]

It could be a couple things Possible phosphate, magnesium or potasium def.. because its at the margins of the leaves and not starting by the inner veins im going with phosphate..

 

[oill]

Maybe. At this stage they're using a lot of K.
Its hard to tell without more info

Temp 82f
Lighting is hlg led
Rh is too high for my liking at 68% (best i can do)
Ec is about 1.5
Using veg + bloom and shine.

It's seems like an issue with just this one plant.