My babies need some help please reply!!!

Hey guys so i have just got my new set up going and i am having some trouble.......im running 2 2x4 tables under 2 400hps all the way through to flowering. im using the supernatural grow aqaua and bloom aqua i plan on introducing some floralicious some time this week. the only thing is that 2 or 3 of my babies seem to hav e some sort of nitro def. i cant think of what else it is but there are only 2 or 3 so and there all in the table so there all getting the same nuets and the same amount... i am lost and want to make thsi grow my best ever so i would really love for and replies and help. pics will be up soon i am going to take them now. please help..sorry the details of the 3 are there all light green and yellowing leaves towards the bottom. which pretty much narrows it down to nitro but i also have a feeling it could be salt build up so next resivoir change i will be flushing for a day with some clearex. i dont knmow what else this could be please help

hey guys so here are the pics plz help

as u can see there not all under need of help but there are a few please help

I personaly think your fine. sometimes leafs just dry up and die. it is the plants way of getting rid of inferier leafs. I would just snip them off and continue doing what your doing. in the years I have been at this sometimes there is no ryhme orreason why one plant does this and the other that in the same RES with the same nutes. I have taken clones from the same mother and watched as one turned into a beautiful high yeild while the other had to be killed to free up the space. nature is a funny thing

Thats a cool set up Laguna are those polystireen tables. I dont know what your problem is, but I would think what you plan on doing next res change will sort it out. Your plants look great to me.

ok thank you guys i was worried i dont want anything going wrong im doing my best to make this the crop of the year