Is this nitrogen or what????

yo
i got my lady bout two an a half months old an shes been flowering for bout a week an some this is the first lady hydro. plant i got an hope to keep her that way i wana correct this asap its eaten up the second set of my bottom sun leafs it look like nitrogen an what should my ppm b at round this time im keeping it between 1500 an 1700 an shes not looking to good or my nut. are to weak any thing can help i respect every ones opinions an facts bless

a lot of views an no opinions??????
i know my cam. sucks but it gets'er done
here are some more pics
the yellowing has slowed but curling is bad

Looks like it could be Nitrogren, I'm not sure about hydro, but 1500-1700 seems a little intense for the start of flowering, my plants got a small nute burn in soil towards the end of flowering with a ppm of 1300. Your plant is going to be fine though, don't worry. Fan leaves usually start dieing in flower, especially if you have a bigger plant and the light doesn't penetrate all the way. Don't worry unless the whole plant is doing it quickly.

respect!!
but yea i kinda knew it but i guess i need to say how to fix it?
but ive been reading more than i did in h.s. an ive read that a guy uses a light grow fert. in their bloom fert.
i have bat guano but ive already been doing to much chemically so im sticing to my base fert.s

Yeah, you should def. still be using some type of nutes with some N in it through most of the flowering stage or all the fan leaves would just turn yellow and die. Good luck.