New Grower perky leaves but curling down at tips looking like hooks

[meanmuggz]

Afghan kush photo grow
Day 15 flower
Dwc
Rez temp 63ºf
Tent 75 lights on 68 lights off
Ph 5.7
Ec 4.0 high yes I'm using AN ph perfect sensi with the whole line
Followed nute calculator at full strength looked great till Now.
Started right after water change
Please help Im thinking nute issue and can I save her and what damage am I looking at.

 

[namvet25]

Leaf clawing is usually caused by excessive nitrogen.Try cutting back your nute dosage to half strength and see if this helps.Other than that your girls are looking fine.

 

[meanmuggz]

Ok I flushed and did 1/2 strength but I kept the ratio 2:1 2ml/l sensi bloom a+b 1ml/l forthe additives for the advanced nutrients ph 5.6 ec 3.0 also put in 3 m l of orcha for the roots any input is appreciated day 16 flower today

 

[meanmuggz]

this is give you a little idea of what I have going on inside my 4 by 4 tent 8 inch hydro innovations icebox used as an AC unit hydro innovations water-cooled co2 generator i have a do it yourself water chiller that I had made out of a dehumidifier in my opinion it works better than a one horse power water chiller
right now I am running a 210 what SP112-D putting in a 180 watt Lifehouse hydro Blackstar Chrome Monday it should be here also a 240 watts flowering spectrum Blackstar as well not the cheap Chinese one either lolas to why the different brands in one tent I don't know could not answer that one to be honest but hey. the 210 wat sets 28 inches away right now I did have a 315 wats in there as well but I sold it I am trying to get either the 720w chrome or a 435w Dominator from lush lightings I have seen the Dominator personally yield consistently between one and three pounds inside of a 4x4x7 tent. and they also take on Cannabis Cup prizes with their entries so I think I'm going to give it a shot I don't know yet Oaksterdam University is using them as well now and they have a 90 day money back guarantee so I'll probably try that one first
why the heck are my pictures upside down and sideways that is kind of odd maybe one too many grand master kush dabs for the phone