Strange curved leaves

Hello guys! What's up?
I'm having problems with my plants. Can you help me?
They are with strangely curved leaves, I think the tray is leaked and the air enters.
Details:
i'm using rockwool, pH 5.7, 6.2 with general hydroponics (simple program),
temperature and humidity are correct, air ventilation too.

Looks like two much nutes but I'm no expert just my opinion, growweedeasy. Com has a bunch of awesome helps and tips

I would guess russet mites.

Looks like over fertilization

Hide on Bush said:

I think the tray is leaked and the air enters.

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Click to expand...

leaking tray? air enters tray? air gets to cube? wtf would air getting into a leaking tray do to cause this?

your feeding habits are not accepted by these plants. try reducing the directions by 50% maybe

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Under closer examination, definitely russet mites. Note the shiny blistery surface on the leaves with upturned corners. You may be over feeding as well, but hard to tell from the russet damage.