Odd leaves,, anyone help?

[Coco bean]

Two weeks into veg and plants are growing great,, but about half have now developed a couple of weird leaves,
Was wondering if it was over / under watering but surely this would affect the whole plant not just a few leaves and I haven’t altered their feeds.
Growing hydro, all nuits and ph in range, 250 lights on a 6/2 split being watered twice a day on a 12 hour split.

 

[TacoMac]

Looks like a combination of iron deficiency and too much heat.

 

[Skoal]

What is your temperature in the tent? Do you have an exhaust fan and an intake fan? What type of light are you using?

 

[Coco bean]

What is your temperature in the tent? Do you have an exhaust fan and an intake fan? What type of light are you using?

Temperature is 24/25,, have an extraction fan which is connected to the light box to take heat out,,using MH lights on 250,,

 

[Skoal]

I don’t think that is a heat issue. 24/25 is a great temperature.

The discolouring on the leaves is that only on the top leaves or did it start on the bottom leaves?

 

[hotrodharley]

You question possibly overwatering and then say it’s hydro. What is it?

 

[Coco bean]

I don’t think that is a heat issue. 24/25 is a great temperature.

The discolouring on the leaves is that only on the top leaves or did it start on the bottom leaves?

It’s just on random leaves, about 2 or 3 leaves around the middle, new growth seems fine. They have a slight shiny look to them and just start curling, I touched one and it came off in my hand, I am clueless.

 

[Coco bean]

You question possibly overwatering and then say it’s hydro. What is it?

It’s iws flood and drain,

 

[hotrodharley]

It’s iws flood and drain,

What is the pH and is it stable?

 

[Coco bean]

What is the pH and is it stable?

Yes the ph is stable, between 5.7 fresh and about 6.1 by the end of the week.

 

[hotrodharley]

Yes the ph is stable, between 5.7 fresh and about 6.1 by the end of the week.

The drooping stems says underwater. Are the roots white?

 

[Coco bean]

The drooping stems says underwater. Are the roots white?

Yes, check all the roots and they look fine, lots of them and all white. Been feeding them advanced nutrients A & B, B52 and hydroguard.

 

[hotrodharley]

Yes, check all the roots and they look fine, lots of them and all white. Been feeding them advanced nutrients A & B, B52 and hydroguard.

Keep air moving and temperatures down and keep going. Daily pH checks suggested.