Just can't fix this ( Pics)

I have some girls that are in day 35 of 12/12 ,I'm in Org. 707 soil, under 1000W HPS and two 100W cfl on the bottom.
Nut are Floranova grow and bloom,Cal mag ,malass,bat grava,bud candy and big bud.PPM are at 1200 ,PH 6.6. Streight ph 6.6 water every other water.
Can't seem to beet it. these leaves are coming from the bottom and have way up,Anybody know whats going on ????? Bud's look great!!and sticky ass hell and smell
like lime or somthing.Help me find the anwser!!!!!!!!

P.S plants are W Widow,Train Wreck. and AK47

Brown on leaves say over nutes. Is the leave brittle?

Come on GUYS somebody knows whats going on!

jafooli said:

Brown on leaves say over nutes. Is the leave brittle?

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Yes they become brittle at the end.

And some of them curl up and dry up.

heat and air circ issues??

Temps range from 67 to 78 ,Have two fans one on top and one on the bottom.
Have charcoal filter hooked up to a exhaust fan and fresh air coming in the room.

Looks and sounds like a P deficiency too me...

If it was me I would try just using the nutes for a week or two without any of the extras. You could also try backing down your ppm's a little. Ive encountered something very similar to your issue in the past, usually with new clones that were over fertilized. Hope this helps you.

cowboylogic said:

Looks and sounds like a P deficiency too me...

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Agreed, phosorus def. Almost always from high ph. I'd flush with ph adjusted water and feed.

Thanks ,Ill water in 3 days with some ph 6.5 water.Then hit it with some light (P)

Thank's. hope that works!!!!!