Potential Problem?

[Just a Habit]

There may be a potential problem with my plants..a few of them have almost a faded bronze-yellow coloured in the segments between the veins on the top part of the leaf. The leaves have stayed green though but you can tell they exist from a distance, so Im not sure whats happening to them?

I know my temperature at one point was probably a little too high 89-90F for a few days which means maybe its a cause of over-heating stress? Or maybe it the cause of overnuting? 300-400ppm. Or maybe its not an issue at all?

 

[D3]

ostpicsworthless:
And we need to know more about your system & how you grow.:hubba:

 

[burnin123]

or maybe its a MAg def.

 

[Just a Habit]

sorry here is a picture of a leaf with the potential issues.

 

[erwinsweeney]

What stage are you at in your grow?

 

[Locked]

What stage are you at in your grow?

:yeahthat:

 

[Just a Habit]

its about 1 month and a half in. Im in the vegitative stage.