Yellowing tips and drooping

Hello all,
Got some problems. Tips are yellowing curling, lower leaves drooping. Im in 2nd week of flower, hydroponics drip with res, ppm is 750, led lights, grow tent, im using general hydro nutes. Following what the bottle says. Leaves are not crispy though they look it. This is my second grow. First was pretty good. But idk whats happening with these babies.

PPM is too high. How old are these?

What the pictures? I just took them. These are 2 weeks into flower. In total from planting they are about 9 weeks.
What should ppm be?

Hi Wat.

Ppm looks too high to me as well.
But-
Whats your ph reading?? Is it really low?
Supplying enough air?
Checked for root rot?
NPK?

Good luck Wat.

Tim1987 said:

Hi Wat.

Ppm looks too high to me as well.
But-
Whats your ph reading?? Is it really low?
Supplying enough air?
Checked for root rot?
NPK?

Good luck Wat.

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Thanks for reply,
Ph is a solid 6. I have airstone in each and in res. And I did check the roots, they were good as well. So I guess it's ppm. Should it be around 500?

I'm not sure how to measure my npk

Watwat87 said:

Thanks for reply,
Ph is a solid 6. I have airstone in each and in res. And I did check the roots, they were good as well. So I guess it's ppm. Should it be around 500?

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Great. Very cool.

I would personally flush it all clean. Then slowly work your ppms back up.
500 sounds about right. Dont be surprised if they want less. So start lower after the flush.

Watwat87 said:

I'm not sure how to measure my npk

Click to expand...

It'll have a total on your bottle.
My a+b is 5-3-9 for example. Its the % of NPK.
Be aware. That a lot of boosters and supplements have an NPK value as well, and should be added to give you a total NPK.

Good news its just overfed.
Its an easy fix.

Good luck Wat.
Take it easy.

Tim

Potassium deficiency.

ChefKimbo said:

Potassium deficiency.

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Looks like it to me too.
But lockout will do the same thing.
Especially if its Na